Catalytic Converter Rattle When Accelerating

Sounds like there is a midget that had a big steel coffee can filled with rocks riding under the jeep, and occasionaly the midget will rattle the crap out of the coffee can. Some times the honey comb on the inside of the cat converter can fall appart from old age and clog up the exhaust. 6404 Pacific Ave Stockton, CA 95207. Car makes a weird metallic rattle when accelerating that last for maybe 1-2 seconds, you don't always hear it but most times when stepping on the gas you can hear it. Your vehicle’s fuel efficiency suddenly drops. The earlier you fix your catalytic converter, the more money you will save on gas. I recently noticed that there’s a rattling sound when the car in in idle (800RPM) but it disappear when I rev it up to higher RPM or while driving. Which will lead to a loss in power especially when accelerating. I can't find anything loose under the car. It ranges from loud (when I give it a lot of gas) to soft (medium gas) to nonexistent (accelerating very gradually). Took it to the dealer, told me my injectors were clogged. This rattle/buzz type noise may be due to the breaking/cracking of the catalytic converter support bracket at the transmission case attachment points. The most common symptom of an inefficient catalytic converter is your check engine light. If you happen to need a new catalytic converter Rock Auto has a Walker part number 15612 49 state Vanagon cat for $98. If you hear the rattle during acceleration, it’s likely that the ceramic honeycomb inside of your catalytic converter is broken. it is really starting to get on my f-ing nerves. Replying to this old thread in case it helps others. This affects the amount of air that your engine can take in, which may affect the fuel-to-air mixture that drives internal combustion. Protect yourself by neutralizing that saw and prolonging those precious seconds with the CatClamp Catalytic Converter Lock. The labor price for replacing a catalytic converter at the reputable auto center can be anywhere from $60 to $130 per hour of work. It sounds like a loose heat shield and only happens under light acceleration up to 2k rpm's. Look for a heat shield above this. I'd bet it diminishes to some extent as the exhaust heats up. Rattling noise - almost certain it's my rear catalytic converter; No OBD II codes; No performance issues except that I've always thought it should get more than 20mpg on the highway. also the check engine light is not on anymore. Rattling noise during acceleration (dmbfan2005) 11-10-2008 02:16 PM #23 I didn't read all the posts, I've seen a thread where your year model has a recall or service bulletin for the catalytic converter, extended the warranty milage. Look for a heat shield above this. I'd bet it. Now It is very audible noice. I'd bet it diminishes to some extent as the exhaust heats up. If you have a clogged catalytic converter it could potentially damage your engine because of the exhaust back pressure. Anymore acceleration to speeds beyond that do not make this sound. The noise appears evident when I have the window down and accelerating relatively softly (ie. that is how i have found both of mine. When I swapped motors I did notice that the driver side converter had allot of white buildup. This can cause a rattle. Not a problem unless it starts to get really loud. I also bought my brand new 2018 Honda CR-V in December 2017 from the USA, shipped it down to Africa, and after my first 1000km, till date I still hear the sudden one-time rattling noise during that moment when I do a quick acceleration from a low speed. This is in 2WD by the way. A rattling sound coming from your car's exhaust system, especially when turning the ignition or while driving at high speeds, can point to damage to the catalytic converter. my car did the exact same thing. Had a rattle coming from under engine. I've had the car for 4 months now (almost 10,000 miles!) and the car is still rattling when I accelerate. Therefore, it is within these first few kilometers of driving that toxic gas emissions are the most significant. A Loose exhaust shield 2. Further small symptoms of a bad catalytic converter are: Reduced acceleration, sluggish engine performance, excessive heat under the vehicle, dark exhaust smoke, the smell of sulfur or rotten eggs from the exhaust. Under light acceleration your 2012-2014 Camry may shudder as the torque converter locks up. And, Usually occurs after the engine has reached or is near normal operating temperature. my car did the exact same thing. Some customers may comment on a rattle/buzz type noise coming from under the engine compartment whenever the vehicle accelerates or decelerates. It's definitely coming from the underbody since I can almost feel the rumble. A bad torque converter could be the origin of rattling sound when accelerating at low speed. I priced new ones and they are around $150 for all four pieces, there are two pieces per. I have 2008 Toyota Camry which has a rattling catalytic converter. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. I've heard a few theories like the oil control valve or the catalytic converter. Two small weld/clip spots at each end connect the shields to the converter, which is steel, and I guess the differing materials came apart. Can I just drive the vehicle without a catalytic converter?. Like McLovin, seems to be worse when the engine is cold, and mine seems to rattle nicely at about 3200 rpm. Several months ago. Chevy truck losing power when accelerating The internal combustion engine of your vehicle relies on the spark plugs for transmitting the electrical signal from the ignition coils to the internal combustion chamber. 2 16v 52 plate - too much oil now engine warning light and car chugging help my 1. Although modern OBD II technology has simplified catalytic converter diagnostics, it’s still important to understand the basics of catalytic converter operation when dealing with a P0420 or P0430 diagnostic trouble code (DTC). Had to replace both cats last night. 2 3 door stilo. Not consistent at all. If you've experienced misfires in the past, they deal a lot of damage to cats and will damage 3. 99 for the Chevrolet HHR. I took it to the dealer who said it is no longer under warranty even though it only has 79,000 miles on it. Rattling Noise under Acceleration. However, my first weld broke loose in a week. I love it, except that it's lacking some power in the low RPMs (under 3k) and it has an annoying rattle from the engine when I accelerate, sounds kind of like the lifter chatter. WAS IN FOR SAME ISSUE ON RO# 1009189. A clogged catalytic converter restricts exhaust flow, while a cracked part will leak. I had this problem once before and it turned out to be the converter. Yosemite Ave. Clogged catalytic converters can be diagnosed by analyzing the exhaust whilst under load. Catalytic converters are an important exhaust system component because they play in passenger safety. Seems to be worse when the truck is Cold. Only one left in the inventory. Had to replace both cats last night. I started noticing the rattle 1 week after taking the car home. Every time you accelerate, shift or rev the engine you get a visceral impact from the sound and feel of your exhaust cracking and burbling. If it rattles, the substrate has disintegrated and the converter should be replaced. Also, exhaust system has rust so he says he needs to replace the whole thing from the cat. If you've experienced misfires in the past, they deal a lot of damage to cats and will damage 3. It sounds like a heat shield rattling making a fluttering sound but only under acceleration. (81 people reported this problem) RepairPal Fair Price Estimate. Tighten it up and problem solved. The car has started making rattle noises, barely noticeable around 40K miles. You are in the mileage range for replacement. Subscribe Subscribed Unsubscribe 104 104. And it was a. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Clogged catalytic converters can be diagnosed by analyzing the exhaust whilst under load. This condition may be caused when the bolts for the catalytic converter brackets have loosened allowing the pipe to move and produce noise. Important life skills: Knowing the difference between a catalytic converter and a rotator cuff Posted on December 28, 2011 by Lia (Lehrer) Goldfarb For the past few months, my car has been making a weird rattling noise when the acceleration reaches exactly 2,000 RPM. Engine Rattling At Idle Catalytic Converter Problems. 0 IF CP CUSTOMER BELIEVES THAT IT MAY POSSIBLY BE A CAT CONVERTER. Rattle From the Catalytic Converter Upper Cover SYMPTOM A rattle is heard from the floor of the car, especially during acceleration. Look for a heat shield above this. Noise seems to come from torque converter area. Since 150 Miles I have been experiencing a Grinding/Rattling Sound when accelerating from a dead stop. revving the crap out of the engine masks the noise, though I assume it's still there), otherwise with the windows up it's not noticeable. Toxic by-products are chemicals such as nitrogen oxides, carbon monoxide, and hydrocarbons (in the form of unburned. That is to say, it takes a few minutes (roughly 10 km) before the catalytic converter really begins to do its job. A catalytic converter is the main component of an exhaust system of a car. This may be especially noticeable when starting the car or while stopped at a traffic light. If you've experienced misfires in the past, they deal a lot of damage to cats and will damage 3. It’s hard to tell without codes being set. An overheated catalytic converter can ignite surrounding flammable materials while it’s running hot. Catalytic converters operate most efficiently at Lambda because all of the gasoline and air inducted into an engine can theoretically be oxidized into water vapor and carbon dioxide. These kinds of. that is how i have found both of mine. The wash ones are when the heat shield over the converter gets loose and rattles, that just takes 5 seconds with a welder, any gas station can do this quickly and cheaply. However, my first weld broke loose in a week. 0 IF CP CUSTOMER BELIEVES THAT IT MAY POSSIBLY BE A CAT CONVERTER. A catalytic converter is an essential part of the exhaust system in a modern car. some steps: 1. I have worked on cars a lot in th past but all petrol, diesels only recently. Engine Rattling At Idle Catalytic Converter Problems. The Murano rattles upon acceleration, but the rattle does not happen all the time. This enables the removal of enough debris to locate the nuts that hold the converter to the mount. A clogged converter will restrict exhaust flow, while a cracked one will leak harmful gas. They're welded on but over time the spot welds do fail and the result is a rattle just as you describe. And, Usually occurs after the engine has reached or is near normal operating temperature. Rattling Noises. Rattling noises from under the vehicle is another common symptom of a bad catalytic converter. After the repair, it rumbles at idle and accelerating like there's a hole in the muffler. However, if there is any sort of obstacle in the way like a cat-converter or a clogged exhaust, then your engine loses power. A damaged catalytic converter can rarely be diagnosed visually. whatever is in cats (i. Replying to this old thread in case it helps others. it won't rattle in neutral but when i accelerate, it has a little chirp/tick to it. Anymore acceleration to speeds beyond that do not make this sound. The front catalytic converter’s guts might deteriorate and start to rattle causing a distinctive sound (listen to the video courtesy of Toyo. You are in the mileage range for replacement. I replaced my catalytic converter with an aftermarket one I found on Amazon (https://goo. if something caused the converter to fail, it'll eventually cause the new one to fail. If it rattles your cat has had it. Aside from the noise, if there is no code thrown or loss in performance, it should be safe to ignore. You can spend a lot to have the shield. I took it to a mechanic and he said that I needed to replace the catalytic converter or it would get clogged and could blast out a valve. Since 150 Miles I have been experiencing a Grinding/Rattling Sound when accelerating from a dead stop. The rattle is only heard on acceleration ie the vehicle is under load, at around 1500-2500 rpms. 1999 to 2016 Super Duty - Catalytic Converter rattles - Hello, I have a 2003 F-250 XL 4x4 with a 5. It is wise to get the catalytic converter checked if you experience two or more of these signs. Before I drove it away I told them. When I continue to accelerate,it goes away and does not come back when slowing down to a stop for example. I had the same experience last year around this time. If there is inadequate fuel or there is too much air, then the mixture burns hot. Asked the garage to do a diagnostic check on the EMS and they reported that the check had shown up a blocked catalytic converter. As far off as this sounds, it could be the front bank catalytic converter. 00 compared with 250. 5s Nissan Altima has been having major issues for the past several months. The function of the modern three-way catalytic converter is to convert the various compounds of HC, O2 and N2 into more environmentally friendly gases. Otherwise, oxygen sensors and/or catalytic converter could be the culprit, for which, unfortunately, the O2 sensors are expensive and the catalytic converter is even more expensive. My question is whether or. Is there way of me taking it out and putting in a regular thru pipe?. 4L Rattle on acceleration between 2000 and 3000 RPM - Duration: 0:25. Once a cat gets clogged the exhaust is able to superheat the catalysts inside, melting/fusing them together and creating a more significant blockage. Jump to Latest Follow 1 - 14 of 14 Posts. CO and HC reduction CATs are called Two Way CATs, and CATs which reduce all three emissions are called Three-Way CATs. I've spent some time under the truck trying to figure it out and I am 99% sure it's the passenger side catalytic converter. Got worse and worse the longer I drove it (my girlfriend at the time kept pushing me for rides to work so I pushed the car way more than I should have). I have a 1994 Ford F-150 302, I have replaced timing chain, O2 sensor, EGR (all ports were clogged), water pump. 6 Signs It May Be Time to Replace Your Catalytic Converter #1- You notice reduced fuel economy. It’s hard to tell without codes being set. If I get under the truck and bang my fist on the cat you can hear it make the same. In addition, a failed oxygen sensor can cause overheating. The Murano rattles upon acceleration, but the rattle does not happen all the time. Toyota is not calling this a recall since. The first shop I took it too thought it may be the catalytic converter and suggested I take it to dealer. Sounds like its coming from behind the radio or ac/heating unit. I've heard a few theories like the oil control valve or the catalytic converter. They're welded on but over time the spot welds do fail and the result is a rattle just as you describe. I had a somewhat similar noise and believe it or not it was the Oil Pan. In this article, you will learn which pollutants are produced by an engine and how a catalytic converter deals with each of these pollutants to help reduce vehicle emissions. Over the last month I've noticed an annoying rattle coming from the Catalytic Converter. A bad torque converter could be the origin of rattling sound when accelerating at low speed. I also feels like something is holding down the acceleration of the vehicle during the time I hear that rattling sound. In case your converter becomes old and damaged internally from excessive fuel mixtures, the catalyst coated honeycombs that are found inside the converter can collapse or break apart causing a rattle. The most important safety feature on your Silverado is its ability to stop. Only happened while accelerating. Internal rattle 1. fiat stilo catalytic converter my new abarth stilo fiat stilo schumacher problems ( again ) oil lpg - is it worth it now stilo 1. Either fault can negatively affect engine performance and cause a reduction in power and acceleration as well as fuel economy. I have 2008 Toyota Camry which has a rattling catalytic converter. Mazda 3 clunk noise when accelerating. Test the components by tapping with a rubber mallet to confirm a rattle. I have an 07 and had the metallic rattle that was the equivalent of fingers-on-chalkboard on acceleration. This condition is present under only partial throttle, light load conditions. everything is tight. This enables the removal of enough debris to locate the nuts that hold the converter to the mount. Only one left in the inventory. easy diagnosis, pasrk the car. The sound appears to be some sort of metallic vibration rattling noise coming from somewhere under the front bonnet of my car, and it tends to sound when the car is idling or travelling at low speeds (approximately 20mph or less). 2 3 door stilo. You are in the mileage range for replacement. Toxic by-products are chemicals such as nitrogen oxides, carbon monoxide, and hydrocarbons (in the form of unburned. For cars that have a catalytic converter there are a series of catalytic converter failure symptoms that one should be familiar with in case this part starts to perform poorly or fail. I have worked on cars a lot in th past but all petrol, diesels only recently. Joined May 7, 2010 · 237 Posts #15 • Jul 23, 2011. This damage is caused when excess fuel enters the exhaust as a result of incorrect air/fuel mixture, engine timing, bad spark plugs, and an oxygen sensor malfunction. I've check other things I though might be it with no avail. Hi guys, I have a 2016 Colorado 2wd z71 with 3700km. Rattle When Accelerating A month or so ago I purchased a '97 Legacy L sedan, auto with the 135 hp engine. Can't tell you a cost for replacing the cat, but a cel eliminator is pretty cheap. The first thing I'd check is the heat shield on the catalytic converter. Though catalytic converter issues don’t necessarily cause misfiring, it is a common sign leading up to an overheated converter that should be addressed quickly. How to Fix Catalytic Converter Heat Shield Rattle. This condition is present under only partial throttle, light load conditions. The catalytic converter overheats because combustion takes place in the converter rather than the engine when a misfire occurs. A damaged catalytic converter can rarely be diagnosed visually. Car is sluggish when accelerating and can hear rattling noise on passenger side. In case your converter becomes old and damaged internally from excessive fuel mixtures, the catalyst coated honeycombs that are found inside the converter can collapse or break apart causing a rattle. Symptoms of a broken catalytic converter include loss of power, stalling, or poor fuel economy. I have a 1995 Chevrolet Corsica, 3. The rattling noise is usually more pronounced when the vehicle is started and gets worse over time. The front catalytic converter’s guts might deteriorate and start to rattle causing a distinctive sound (listen to the video courtesy of Toyo. My truck has 270k and whenever I punch the throttle or have to accelerate hard to go uphill I here a rattle that seems to follow engine acceleration. My Prius makes a rattle noise under medium acceleration. Damaged Catalytic Converter. A clogged converter will limit the exhaust flow, while a cracked or broken converter will leak harmful toxins. Unscrrew the clamp completely, thread the open end of the clamp around the top of the converter and retighten. As you can see, the cost of replacing a catalytic converter varies a lot, which is why it’s always a good idea to ask for quotes before you settle on a mechanic to do the job. 2 16v 52 plate - too much oil now engine warning light and car chugging help my 1. The first thing I'd check is the heat shield on the catalytic converter. Catalytic converter rattles can be a bad day on the road. A rattling noise. Smoking exhaust pipes can be a serious offense in some states, and without a working catalytic converter you will not pass emissions test. No heat shield to rattle on the truck. you bump it with your hand and it sounds like a piece is loose inside moving around. Either problem causes a reduction in acceleration, power, and fuel economy. It is a rattle that sounds like some sort of heat shield, but to my suprise it was not. Can I just drive the vehicle without a catalytic converter?. A rattling catalytic converter when the vehicle is idle; Reduced engine performance; Thick white smoke coming out of the tailpipe; Trouble when accelerating; A glowing hot catalytic converter that might start a fire in the vehicle. The catalytic converter has an internal rattle that is heard at idle, in gear. It is mainly due to old converters or to damage caused by honeycomb meshes. The catalytic converter is an emissions control component in your exhaust system. I have also seen catalytic converters that have been fitted too far behind on the exhaust pipe. Engine spark knock is usually heard during moderate to heavy engine acceleration. We took it back to the dealership and they also heard the rattle but couldn't figure out what the problem was. Dodge Dakota Clicking Noise When Accelerating. ive been hearing a rattling noise and it kept getting worse. While your vehicles check engine light should come on when you have a problem with your catalytic converter, some other common signs to watch for include: • Reduced engine performance…especially when accelerating or going up hills. I can't find anything loose under the car. A clogged converter will restrict exhaust flow, while a cracked one will leak. The Mass Airflow Sensor (MAF) measures the amount of air the car needs to. After my foot goes farther down on the gas pedal the noise goes away. The catalytic converter rattle sound is one of the most typical symptoms of a failing catalytic converter. Either significantly reduced performance, or, a loud rattling sound when at idle that goes away under acceleration. A year ago, I changed the catalytic converter after a smog test failure. The MIL or Check Engine light comes on. I have a 2014 jeep patriot sport 2. It was only as I was accelerating. Toyota is not calling this a recall since. I took it to the dealer who said it is no longer under warranty even though it only has 79,000 miles on it. When these shields become damaged or loose, they can contact the catalytic converter or muffler and cause rattling or banging noises. Installed no problem, rattle gone. Hello All, I have an older 2001 Honda accord I4 about 160k miles on it. The first is belt noise. By Gary Goms. While your vehicles check engine light should come on when you have a problem with your catalytic converter, some other common signs to watch for include: • Reduced engine performance…especially when accelerating or going up hills. When it does happen, it seems to be around 20mph and between 1500 - 2000 rpm. Every time you accelerate, shift or rev the engine you get a visceral impact from the sound and feel of your exhaust cracking and burbling. Two cures are possible, one is to place a metal clamp on it to hold it down, the other is to remove it. To rule out obvious simple causes, check the fluid level in the transmission per the instructions in the owner’s manual (follow carefully; otherwise reading will be meaningless). Over time, rust and vibration may crack the heat shield causing it to come loose or fall off. High-quality Catalytic Converters can be one of the most rewarding mods you can do to your Chevy C/K 2500. Rev the engine; you should hear the rattling noise very clearly coming from the catalytic converter. Jokerjokester55. 23000 miles, heard the rattle, lost power, misfire, check engine lite stayed on. View attachment 64123 View attachment 64124 View attachment 64125 View attachment 64126. This affects the amount of air that your engine can take in, which may affect the fuel-to-air mixture that drives internal combustion. the heat shield on the catalytic converter Find the answer to this and other Ford My 02 Explorer is making a loud rumbling noise 1997 Ford Explorer rattle issue - YouTube Oct 30, 2012 · 1997 Ford Explorer rattle issue Bobby D. On an F-150 the catalytic converters are usually about three feet away from the engine towards the muffler. Replaced it, man what a. The rattling noise is usually more pronounced when the vehicle is started and gets worse over time. The converter is responsible for removing toxic fumes from a vehicle’s exhaust and converting them into more harmless substances. if something caused the converter to fail, it'll eventually cause the new one to fail. In precise fitment and optimum performance, these OEM Hyundai catalytic converters are unbeatable. Got worse and worse the longer I drove it (my girlfriend at the time kept pushing me for rides to work so I pushed the car way more than I should have). I am having an issue where I notice what sounds like a metallic spinning noise or maybe a metallic bird-like noise (hard to describe). The check engine light came on for the converter and I took it to a shop that confirmed it needed to be replaced. i have since had it replaced and it sounds just perfect now. All my heat shields seem to be tight. I tested drive a 2000 Taurus 3. Cause This rattle/buzz type noise may be due to the breaking/cracking of the catalytic converter support bracket at the transmission case attachment points. Installed no problem, rattle gone. Jump to Latest Follow 1 - 10 of 10 Posts I've spent some time under the truck trying to figure it out and I am 99% sure it's the passenger side catalytic converter. As far off as this sounds, it could be the front bank catalytic converter. well is possible, a few months ago in my 98 Silverado i heard a little metal to metal rattle from under the hood, i was worried as fuck. Law-Breaking. When catalytic converter fails, the symptom is: severe lack of acceleration and stalling even. If your catalytic converter is failing, you may notice a significant reduction in fuel economy. Based on the claims from several Honda Accord owners, a loose heat shield covering the catalytic converter will cause a rattling or grinding noise as you accelerate. It converts the toxic gases and pollutants in your exhaust gas into less dangerous substances. When I continue to accelerate,it goes away and does not come back when slowing down to a stop for example. Usually containing palladium, platinum, and/or rhodium, a stolen catalytic converter can fetch thieves a pretty penny, not to mention cost you up to $1,000 in total repair costs to get it replaced. The catalytic converter is a component of the exhaust system and must be kept free-flowing to allow the easy passage of exhaust. In some places, such as on the catalytic converter or the muffler, heat shields provide protection from exhaust heat. It's somewhere in the passenger door or dashboard, but can't find it for the life of me. In other words, the ECU will know that the catalytic converter isn't doing it's job, then throw a code, and put the vehicle in "limp" mode. Baffles inside of the catalytic converter are probably rusted and coming loose. I took it into my mechanic and really didn't expect it to be my catalytic converter (However it has been rattling like crap & the original). I have 2008 Toyota Camry which has a rattling catalytic converter. The first thing that comes to mind with a rattle under acceleration would be a heat sheild. The sound appears to be some sort of metallic vibration rattling noise coming from somewhere under the front bonnet of my car, and it tends to sound when the car is idling or travelling at low speeds (approximately 20mph or less). The excessive fuel ignites in the converter instead of the combustion chamber. I started hittin my fist around the bottom of the truck and the rattle is at the O2 sensor i believe. Walker has a $50 mail in rebate program now on the direct fit catalytic converters. When catalytic converter fails, the symptom is: severe lack of acceleration and stalling even. The most important safety feature on your Silverado is its ability to stop. Both the bottom cats on my CLK started to make an annoying rattling sound recently. The first thing I'd check is the heat shield on the catalytic converter. Our Catalytic Converter OEM and aftermarket parts range from $135. I have recently noticed an annoying rattle / buzzing sound with acceleration in 2000-3000 rpm range in 1st, 2nd, 3rd gears. more obvious when starting the vehicle, and will get worse over time. I have a 97 Jeep Grand Cherokee. A car with a clogged catalytic converter can feel like it has no acceleration, even if you're on the gas pedal, or can even fail to start-up. These kinds of. If you drive a T6 Ford Ranger 3. The catalytic converter is only effective at temperatures above 750°F. Just to make sure, open your car door with the engine running and in park, lean down so you can listen under the car. • Hearing a rattling noise from under the vehicle. car starts and drives fine, I can even rev it up and all fine in park but the moment i switch it to neutral or drive (no gas or with gas), this loud ticking sound goes off and its driving me crazy!! any idea what would cause this?. The Heat Shield: This is a thin stainless stamped piece, that is bolted on top of the catalytic converter to insulate the frame from the heat eminating from the exhaust stream. Strange Exhaust Odors. Rattling Noise – Once your catalytic converter becomes older or damaged from fuel mixtures, the honeycombs on the inside can begin to collapse and/or break apart which will cause a rattle to occur. Sounds like right under passenger side front floorboard. Catalytic Converter. This can cause a rattle. Replying to this old thread in case it helps others. It sounds somewhat like a rattle and sounds like the engine is struggling. My first thought was loose exhaust heat shield. Someone told me it could be the catalytic converter, but I'm not losing any power at all. The catalytic converter only begins working after exhaust has exited the engine's combustion chambers. The inside of the converter is coated with a thin mesh structure called the ceramic catalyst. Jack it up and hit the exhaust piping it will probably make the sound. In some places, such as on the catalytic converter or the muffler, heat shields provide protection from exhaust heat. I don’t have any rattle noise on start up, vehicle performance is good and the vehicles done 26k. I have recently noticed an annoying rattle / buzzing sound with acceleration in 2000-3000 rpm range in 1st, 2nd, 3rd gears. For logistical reason, I took it to Midas instead of doing it myself. This may be especially noticeable when starting the car or while stopped at a traffic light. Check engine light flashes in a sequence of %26quot;flash, flash, on%26quot; after using the ignition key method (this means it needs an oxygen sensor). James Connell 11,674 views. My question is whether or. Many time when a catalytic converter fails it breaks apart and rattles inside if the housing. Re: Rattling noise on acceleration Post by shayedtree » Mon Apr 20, 2020 4:29 pm emcisme wrote: ↑ Fri May 12, 2017 7:30 pm I have the same symptoms on me E-150, 2002. A catalytic converter that is clogged will create a increase in exhaust pressure. easy diagnosis, pasrk the car. It will be a faint sound when the car is idling in ‘park’ mode, but the volume and frequency will increase in proportion to acceleration. EMISSION SUB SYSTEMS - Catalytic Converter. Also seems to be louder with a cold engine, can only hear with window down. When your cat starts rattling inside, it’s only a matter of time before it causes a blockage that makes your engine run poorly. i took it to my mechanic and he said it was the catalytic converter and its not a big deal. The Honda dealership wanted $1100 (!) saying it was all due to labor since most of the exhaust system would have to come off to get at the shields. They're welded on but over time the spot welds do fail and the result is a rattle just as you describe. The catalytic converter broke and the part from it clogged up , which caused the vehicle to loose power. 00 from Rock Auto. On Fredericksburg vehicles, the exhaust system has a catalytic converter. Symptoms of a broken catalytic converter include loss of power, stalling, or poor fuel economy. then maybe 2 weeks later i rev it up again with the hood open and im standing at the hood and i don't hear the rattle anymore BUT i hear the same rattle right behind my cab. My car has made a sound like this since new. Is it the Catalytic converter? The car is a 2004 Toyota. could be? Upon accelerating at high rpms my car makes a horrible whistle. (81 people reported this problem) RepairPal Fair Price Estimate. Lightly tap the catalytic converter with a hammer on both ends. As you can see, the cost of replacing a catalytic converter varies a lot, which is why it’s always a good idea to ask for quotes before you settle on a mechanic to do the job. There is a rattle in my exhaust that i think is the drivers side catalytic converter. 00 compared with 250. Rattling noise. If you attempt to accelerate aggressively or uphill and notice a lack of power, the catalytic converter may be the issue. Chevy truck losing power when accelerating The internal combustion engine of your vehicle relies on the spark plugs for transmitting the electrical signal from the ignition coils to the internal combustion chamber. If the converter rattles when tapped with a plastic hammer, it must be replaced. There is typically some type of dampening in a clutch disc center. Uses a Qt of oil every 1500 miles. If you have a catalytic converter with a honeycomb structure, parts of this structure can break and impact performance. The catalytic converter is a component of the exhaust system and must be kept free-flowing to allow the easy passage of exhaust. In some places, such as on the catalytic converter or the muffler, heat shields provide protection from exhaust heat. The noise appears evident when I have the window down and accelerating relatively softly (ie. repair any exhaust leaks first. i have since had it replaced and it sounds just perfect now. Jump to Latest Follow 1 - 1 of 1 Posts. Could this be the catalytic converter? How would I know? Not at idle, just when accel. If you've experienced misfires in the past, they deal a lot of damage to cats and will damage 3. e non supermarket fuel and a long run up the motorway the problem seems to have disappeared. The catalytic converter overheats because combustion takes place in the converter rather than the engine when a misfire occurs. The interior door hinge was inoperative. Jack it up and hit the exhaust piping it will probably make the sound. then maybe 2 weeks later i rev it up again with the hood open and im standing at the hood and i don't hear the rattle anymore BUT i hear the same rattle right behind my cab. Catalytic converter was clogged. This condition may be caused when the bolts for the catalytic converter brackets have loosened allowing the pipe to move and produce noise. Your vehicle’s fuel efficiency suddenly drops. If a catalytic converter becomes clogged, it can create a loss of power on acceleration, and may be able to be heard as a rattling underneath the vehicle. - It is a 93 Asuna Sunfire ie rebranded isuzu impulse - the clutch is good - drivetrain is in good repair -needs brake work in the back -needs new struts in the back My question is can I get rid of the rattle with a new muffler other. Catalytic converters are an integral part of the exhaust system of a vehicle. A rattling catalytic converter when the vehicle is idle; Reduced engine performance; Thick white smoke coming out of the tailpipe; Trouble when accelerating; A glowing hot catalytic converter that might start a fire in the vehicle. I looked up the oem saturn converter ($550) and decided that was too. Well, the van was throwing a P0420 code and the shop replaced that catalyst under 8year/80K warranty. Your vehicle doesn’t accelerate when you step on the gas pedal. Only accelerating from a cold start or accelerating from 5mph or less. The sound appears to be some sort of metallic vibration rattling noise coming from somewhere under the front bonnet of my car, and it tends to sound when the car is idling or travelling at low speeds (approximately 20mph or less). Do I need to replace my catalytic converter? - 1 Added (1). The rattling noise is usually more pronounced when the vehicle is started and gets worse over time. The car had no exhaust noise before the center pipe broke. The labor price for replacing a catalytic converter at the reputable auto center can be anywhere from $60 to $130 per hour of work. Many drivers simply don't push their vehicles hard enough to heat the catalytic converter to its most-efficient temperature—between 800 °F (426 °C) and 1,832 °F (1,000 °C)—leading to premature failure. ) Has always made the noise ever since I bought it 4 years ago with 150k miles. 99 to $1,047. rattles are usually benign and meaningless heat shields. 0L? For some strange reason all 3. If the converter rattles when tapped with a plastic hammer, it must be replaced. The car isn't suffering from any of the usual performance issues when a cat goes bad and there aren't any check engine lights except for a recent P0455 large evap leak. I've spent some time under the truck trying to figure it out and I am 99% sure it's the passenger side catalytic converter. The sound resembles a can of marbles rattling under the car at start-up or acceleration. Rattling Noise. I am very concerned as to what this. It may be catalytic converter heat shield (Cover), the lower part below secondary O2, is always rattling on Ridgeline, Pilot. Check engine light flashes in a sequence of %26quot;flash, flash, on%26quot; after using the ignition key method (this means it needs an oxygen sensor). Before I drove it away I told them. Only happened while accelerating. Once you have removed the catalytic converter, shake it to see if you hear any noises. Installed no problem, rattle gone. rattle noise on acceleration. Further small symptoms of a bad catalytic converter are: Reduced acceleration, sluggish engine performance, excessive heat under the vehicle, dark exhaust smoke, the smell of sulfur or rotten eggs from the exhaust. However, a deep rumbling noise comes when accelerating. I have not noticed any loss in performance. If you hear the rattle during acceleration, it's likely that the ceramic honeycomb inside of your catalytic converter is broken. I also had a rattling issue on my 99 Camaro at start up and during acceleration - and found a heat shield loose and rattled as I accelerated. ) Has always made the noise ever since I bought it 4 years ago with 150k miles. And, Usually occurs after the engine has reached or is near normal operating temperature. Mazda 3 clunk noise when accelerating. Nothing is loose under the hood (prop, washer fluid reservoir ect. The rattling sound is temporary and goes away when I reach 30 - 40 mph. Usually containing palladium, platinum, and/or rhodium, a stolen catalytic converter can fetch thieves a pretty penny, not to mention cost you up to $1,000 in total repair costs to get it replaced. No smell or loss of performance is. Jack it up and hit the exhaust piping it will probably make the sound. more obvious when starting the vehicle, and will get worse over time. As you can see, the cost of replacing a catalytic converter varies a lot, which is why it’s always a good idea to ask for quotes before you settle on a mechanic to do the job. So the noise is prominent throughout the rpm band, very faint when accelerating lightly between 1000-2000rpm and get its loudest around 3000rpm before toning down. When your cat starts rattling inside, it's only a matter of time before it causes a blockage that makes your engine run poorly. It converts the toxic gases and pollutants in your exhaust gas into less dangerous substances. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. My car has just developed this odd rattling/ticking noise coming from the engine bay today!!. Might want to have an exhaust shop take a look at it for you. Warning Porsche 928 models equipped with dual ignition circuits (two distributors) can experience an ignition circuit failure where half of the cylinders will stop firing, and raw fuel will be dumped into the exhaust system. Crawl under the truck and bang on the exhaust. 1999 to 2016 Super Duty - Catalytic Converter rattles - Hello, I have a 2003 F-250 XL 4x4 with a 5. The catalytic converter is an emissions control component in your exhaust system. Sounds like my '78 Pinto when I took the catalytic. I believe it may be 2 possibilities: 1. The car has been great, besides the rattling noise when i accelerate. CHINAFLOWER · Registered. Ask and assistance to rev the engine to 300-4000 rpm and hold a piece of paper at the exhaust end, the paper should "fly" up, if not then exhaust outoput is compromised. Could be a bad catalytic converter and maybe muffler. I recently noticed that there’s a rattling sound when the car in in idle (800RPM) but it disappear when I rev it up to higher RPM or while driving. I had also been smelling fumes for some time which was probably due to the corroded connection at the back of the catalytic converter. Catalyst failure usually sets fault codes in the ECM. On and around the exhaust system, heat accelerates corrosion. At the peak of acceleration (just before the automatic transmission shifts) there is a rattle/growl from what sounds like the engine. Catalytic converters are an important exhaust system component because they play in passenger safety. If you think you have a problem with any part of your exhaust system, including your muffler, oxygen sensor, resonator, gasket, exhaust pipe, or catalytic converter, contact us at (765) 477-7300 for an inspection. My Prius makes a rattle noise under medium acceleration. Catalyst failure usually sets fault codes in the ECM. I started noticing the rattle 1 week after taking the car home. The noise level is also different, sometimes it is a softer rattle that is on the quieter side, while other times it is more harsh and rather loud. Cause This rattle/buzz type noise may be due to the breaking/cracking of the catalytic converter support bracket at the transmission case attachment points. Choose between shipping to home and Same Day Store Pickup to get the catalytic converter you need, when you need it. The code is for catalytic converter. This can be caused by normal wear over time, or it can be from physical damage such as a direct impact on the catalytic converter. 23000 miles, heard the rattle, lost power, misfire, check engine lite stayed on. I would guess that the catalytic converter guts have come loose. You could hear rattling noises and notice some misfiring upon starting. We'll figure it out, don't worry. You may want to check the heat shield on your catalytic converter. TH-400 trans has a rattling noise sounding like a very loud heat shield rattling with viberation. The growl/rattle sounds like it might be in the 100-120 Hertz range. 2) Your car may delay when trying to accelerate while driving. Car Shaking When Accelerating -12. They're welded on but over time the spot welds do fail and the result is a rattle just as you describe. Strange Rattling Noise Upon Acceleration Discussion in ' Catalytic converter coming apart on the inside maybe Oct 7, 2011 at 6:20 AM #8. Bad catalytic converter. All my heat shields seem to be tight. Hello everyone, new to the forum here and need to advice from some people experienced with catalytic converter issues I have a 2. If you hear rattling you have a problem as it is an indicator that your catalytic converter may be old or damaged internally from excessively rich fuel mixtures. The sound of rattling from inside the catalytic converter when it’s shaken is also a pretty straightforward indication of failure. If your exhaust rattles on acceleration Before you waste money replacing the catalytic converter, as most will tell you the most likely cause is a cracked or broken divider plate in the the engine pipe collector Firslty remove covers, be sure to lubricate all nuts & bolts with WD40 or similar to ensure easier removal. You can spend a lot to have the shield. It sounds like a heat shield rattling making a fluttering sound but only under acceleration. After my foot goes farther down on the gas pedal the noise goes away. I've got a 2001 Honda CRV w/ ~185,000K on it. com - $20 / Month Auto Insurance, $13 Online Traffic School. If you have a clogged catalytic converter it could potentially damage your engine because of the exhaust back pressure. Engine Rattling At Idle Catalytic Converter Problems. This can cause a rattle. MAF Sensor Malfunction. The front catalytic converter’s guts might deteriorate and start to rattle causing a distinctive sound (listen to the video courtesy of Toyo Headquarters). I know its probably from the straight pipes, but is there anything I can do to stop it? Maybe put a muffler on? Any help would be appreciated. I'd bet it diminishes to some extent as the exhaust heats up. When a catalytic converter gets damaged internally from excessively rich fuel mixtures, the coated honeycombs on the inside of the converter often collapse or break apart. The catalytic converter broke and the part from it clogged up , which caused the vehicle to loose power. Okay quick little update before I go to bed. I believe it may be 2 possibilities: 1. Jump to Latest Follow 1 - 10 of 10 Posts I've spent some time under the truck trying to figure it out and I am 99% sure it's the passenger side catalytic converter. It sounds like a loose heat shield and only happens under light acceleration up to 2k rpm's. Save Share. A catalytic converter that has become plugged can’t funnel exhaust fumes efficiently to your muffler. Your first stop should be Advance Auto Parts with an inventory of 22 Catalytic Converter parts for your Chevrolet HHR. That is your cat. If you don’t accelerate or drive any faster when you step on your gas pedal, your converter may be clogged. It’s hard to tell without codes being set. Hello everyone, new to the forum here and need to advice from some people experienced with catalytic converter issues I have a 2. Engine Rattling Noise on Acceleration. MPG seems low at 18ish in town and 23 highway. Most motorists often view catalytic converters as both a blessing and a curse. Is there way of me taking it out and putting in a regular thru pipe?. everything is tight. They have one for your application too. Jokerjokester55. If the catalytic converter's housing is discolored or warped, there may be internal leakage or overheating. i wouldnt hear it in neutral revving the engine, or when i was traveling on the highway at a high speed/high rpms. My question is whether or. This light could indicate that you have a damaged oxygen sensor, but it also could be the first sign that your converter is damaged or clogged. Jack it up and hit the exhaust piping it will probably make the sound. If a catalytic converter becomes clogged, it can create a loss of power on acceleration, and may be able to be heard as a rattling underneath the vehicle. Rattling noise. Your catalytic converter consists of small, honeycomb-shaped components that can cause a rattling sound when broken. Looked inside, and it basically disintegrated. If you don’t accelerate or drive any faster when you step on your gas pedal, your converter may be clogged. I recently noticed that there’s a rattling sound when the car in in idle (800RPM) but it disappear when I rev it up to higher RPM or while driving. Both can negatively affect engine performance and can cause a reduction in power and acceleration as well as fuel economy. BTW, do this when the car is cold. Faulty catalytic converters will often give you acceleration troubles. Torque Converter. And, Usually occurs after the engine has reached or is near normal operating temperature. CHINAFLOWER · Registered. So the noise is prominent throughout the rpm band, very faint when accelerating lightly between 1000-2000rpm and get its loudest around 3000rpm before toning down. Catalytic converters either use beads or honeycomb structures coated with precious metals to filter and reduce emissions. When the converter exceeds an operating temperature of about 1,300 degrees F, the converter substrate begins to melt and cause exhaust restriction. Protect yourself by neutralizing that saw and prolonging those precious seconds with the CatClamp Catalytic Converter Lock. My question is whether or. It only happens when going > 30mph. I haven't yet been able to take it on the motorway (it was only done yesterday) but the noise driving into work was pretty bad. The "Italian Tune-Up" The "Italian Tune-Up" is a common fix for a range of automotive problems, including a clogged catalytic converter. Your vehicle may refuse to start. I’ve now looked into that further and the general online consensus explains that a rattle caused by the catalytic converter is loudest on start up. In this article, you will learn which pollutants are produced by an engine and how a catalytic converter deals with each of these pollutants to help reduce vehicle emissions. Sounds like heat shield, but underneath inspection can't find anything loose or worn. When your converter is clogged, your vehicle will have a harder time accelerating. The truth is, on modern vehicles, the catalytic converter should last the life of the car or truck, given an "average" life of about 100,000 miles (160,934 kilometers). Catalytic converters get very hot -- upwards of 900- to 1000-degrees F in some cases. I love it, except that it's lacking some power in the low RPMs (under 3k) and it has an annoying rattle from the engine when I accelerate, sounds kind of like the lifter chatter. When a catalytic converter gets damaged internally from excessively rich fuel mixtures, the coated honeycombs on the inside of the converter often collapse or break apart. Had a rattle coming from under engine. I know diesels can rattle when under load but what generally causes this. Acceleration Rattle Apr 15 2013, 4:49am Hey guys Ive noticed over these last few thousand miles that I have developed a metallic rattling noise coming from engine compartment/under vehicle. Rattling sound: Eisenfaust: Classic T4Rs: 2: 07-22-2012 02:28 PM: Rattle sound when accelerating: 4RunnerMD: 3rd gen T4Rs: 9: 02-14-2012 03:26 PM: Car not accelerating when going uphil (popping and rattling sounds) el_chapu-bling: 3rd gen T4Rs: 12: 04-19-2006 02:21 PM: Flushing or Gurgling Sound when accelerating. The first is the cat getting plugged, the second is the actual catalyst coming loose inside the converter casing. This can cause a rattle. By far one of the most common symptoms of a clogged catalytic converter is a lack of performance. Only accelerating from a cold start or accelerating from 5mph or less. spark plugs, wires, air filter, fuel filter, run some seafoam and/or MMO through the intake, gas, oil. 1st Gen Dakota Tech - Catalytic Converter Rattle??? - My Cat has started to rattle quite bad now would it cause an erratic idle. The catalytic converter rattle sound is one of the most typical symptoms of a failing catalytic converter. I too have checked all the heat shields, etc. The catalytic converter is an emissions control component in your exhaust system. Based on the claims from several Honda Accord owners, a loose heat shield covering the catalytic converter will cause a rattling or grinding noise as you accelerate. but when i would accelerate in any gear and step on the gas and the rpms were between 2000-2700 it would sound like that. Though catalytic converter issues don’t necessarily cause misfiring, it is a common sign leading up to an overheated converter that should be addressed quickly. everything is tight. Any ideas?. This can be caused by normal wear over time, or it can be from physical damage such as a direct impact on the catalytic converter. Your catalytic converter consists of small, honeycomb-shaped components that can cause a rattling sound when broken. The rattling has been happening for a while. This can cause a rattle. Either rip off what rattles or put a clamp around it. A rattling sound coming from your car's exhaust system, especially when turning the ignition or while driving at high speeds, can point to damage to the catalytic converter. The noise level is also different, sometimes it is a softer rattle that is on the quieter side, while other times it is more harsh and rather loud. Catalytic converters are an integral part of the exhaust system of a vehicle. As you accelerate, the engine is supposed to enrich the mixture for maximum power. and makes a rattling noise while it does. The sound appears to be some sort of metallic vibration rattling noise coming from somewhere under the front bonnet of my car, and it tends to sound when the car is idling or travelling at low speeds (approximately 20mph or less). This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. I have the same problem. Replaced it, man what a. Many cars have dashboard lights that indicate when a catalytic converter isn't working properly. QUESTION: How do you know a catalytic converter is starting to go bad? We have a 90 Accord and the thing runs loud even when coasting. The catalytic converter is an emissions control component in your exhaust system.