When you hear a rattling sound, the source can be one of the many parts of the engine and exhaust system. Then, Most likely you’re probably experiencing spark knock. So maybe under acceleration but not while crusing. Raised back up and all fixed. Whether it's engine knocking when accelerating or some kind of spark knock or just a general engine noise, some are more serious than others, but there’s one thing that’s true of … I have a 2000 S-10 with a 2.2L, regular cab and I have 136,xxx miles on it. Has always made the noise ever since I bought it 4 years ago with 150k miles. Broken Belt Tensioner or Chain Tensioner. 2015 Crosstrek - metal rattle sound when accelerating. The bearings are what allow the cam and crankshaft to spin for thousands of miles and millions of revolutions. Trying to help a friend out with diagnosing what appears to be an exhaust rattle. While the exhaust is outside of the engine itself, it can often cause sounds that are confused for an internal engine rattle. These items can get accidentally in touch with the muffler, and that’s what creates the rattling noise in the muffler. Another possible reason for muffler noise is, there can be issues in parts that are not directly connected to the muffler. A metal rattling sound when I accelerate from a slow speed or from a complete stop. A muffler is a part of the exhaust system, and it’s installed onto the exhaust pipe. There are many brands and models available. The effect of a noisy muffler is not only lied within a disturbance. Some of these include: Loose or broken pipe connection; Rusty muffler; Blown exhaust gasket; Broke or disconnected exhaust … And that’s what creates this rattling noise. It will make the noise as it passes the rpm if you accelerate a bit more briskly but after a certain throttle input point I think it passes the rpm too quickly to produce the symptom. In addition, the exhaust noise might be louder than is when you are driving your cars. Like McLovin, seems to be worse when the engine is cold, and mine seems to rattle nicely at about 3200 rpm. This can cause the rattling noise that you will hear from under the vehicle. Could that possibly mean anything for this problem or is this entirely separate? Hopefully the last time I ask on this thread, but I had my CEL ran and the only code that came up was a code for my Air flow sensor. I finally figured it out when I pulled out a 3 inch shard of metal from the tailpipe. The rattling noise is typically heard while driving especially during acceleration or when you drive on poorly-paved roads. The car still accelerates but is slightly less powerful and exhaust fumes quickly built up in my car. While the exhaust is outside of the engine itself, it can often cause sounds that are confused for an internal engine rattle. The baffles in my muffler blew apart, under hard acceleration the rattle was terrible but at cruising speed it was normal. Heat Shield. Were you able to check it? System Efficiency Below Threshold (bank 1) Ignition pinging is often interpreted as a rattle at first because of the metal-on-metal noise it creates, and it is commonly heard only on acceleration. When the car is cold, under acceleration, it rattles good. If you have a car with active exhaust, it’s possible that the rattling noise that you hear when accelerating is caused by a component of the active exhaust system. Take a rubber mallet and tap pm the exhaust to see if you can locate the noise. To clean up the internal dust out of the muffler, you need a car cleaning brush with a long handle. The Transmission Fluid Level. And the job of the muffler is to reduce the noise that comes from the engine section. It creates opposing sound waves that prevent the engine noise to come out. Noises Problem Cracked Flywheel or Flexplate Repair Costs. Acceleration Rattle. Jump to Latest Follow 1 - 5 of 5 Posts. I guess I have just gotten used to this, but someone pointed out recently who was in my car that when I accelerate at slow to moderate speeds, there is this rattling tin can noise. Open up the muffler and check for any baffle or other kinds of components. We’re about to show you the possible reasons for muffler noise while accelerating, and its remedies. Edited January 23, 2017 by Trp234 As a result, the muffler cancels the harsh and loud noises that come out of the engine. Anymore acceleration to speeds beyond that do not make this sound. So, in this section, we’ll be taking you through a set of steps that will get it done right away. Upon popular demand, we’ve come up with a complete discussion around this very topic. Another possible reason for muffler noise is, there can be issues in parts that are not directly connected to the muffler. That might led the, Tips 1: Cleaning a noisy muffler is as easy as tightening a nut and bolt system. Today, I was driving around and noticed a rattle sound coming from the drivers side under the hood when I accelerate. You may consider getting several sizes of it for more proficiency. Post Reply. Regardless of the fault, you must identify and correct the problem quickly -- otherwise your problem will get worse. This rattle noise under the car can appear to come from under the car instead of the rear of the vehicle, showing that the exhaust pipe can be a clear cause of the rattling noise. Sometimes, metal pipes around the muffler can already be damaged. This rattle noise under the car can appear to come from under the car instead of the rear of the vehicle, showing that the exhaust pipe can be a clear cause of the rattling noise. I got it replaced a few days ago and the problem was solved! Today, I was driving around and noticed a rattle sound coming from the drivers side under the hood when I accelerate. As a benefit, you don’t get bothered by the highly irritating engine noise. As the exhaust system works as a whole unit, any kind of presence of unexpected materials may lead to several problems like noise, vibration, and so on. Well, there are many components that are nearby the exhaust pipe. I was told my air filter could need changing as-well. Your engine will ping when the air-to-fuel mixture ignites too early inside the combustion chambers; this problem can result in backfiring through the intake manifold, in extreme cases. It’s not a major issue, but you would want to check it to rule out the … If you become sure about that after thorough inspecting, that’s the only option left for you to replace it with a. . But before that, let us tell you the consequences of a rattling muffler-. This can cause the rattling noise that you will hear from under the vehicle. I also feels like something is holding down the acceleration of the vehicle during the time I hear that rattling sound. There can be rust or debris around the parts of the muffler if you don’t take care of the muffler noise pretty soon. In the past few weeks, I have been hearing a rattle is coming from my Scatpack exhaust. Now and again it also happens when starting up. Roughly two-thirds of the way through a four-hour drive, I started to hear a rattling or grinding sound coming from the front of the car, perhaps closer to the driver’s side than the passenger’s. You say "typically" you run 91 octane. Maybe they forgot something when … Mine does this too, rattles whenever I accelerate from a dead stop to about 20 MPH. The baffles in my muffler blew apart, under hard acceleration the rattle was terrible but at cruising speed it was normal. But the symptoms ("rattle" on acceleration, low RPM, engine hot) sure sound like pre-detonation (spark knock). This rattle noise under the car can appear to come from under the car instead of the rear of the vehicle, showing that the exhaust pipe can be a clear cause of the rattling noise. Code P0420= Cat. Or the catalytic shield. Drive belts, timing belts, and timing chains need to have a … Anymore acceleration to speeds beyond that do not make this sound. I've heard a few theories like the oil control valve or the catalytic converter. Take help from the manufacturers if needed. An occasional rattle from the silencer (muffler?) An occasional gassy/exhaust smell from the OSF wheel arch. Two codes actually, but both pointing to the mass air flow sensor, I checked my air filter this morning and it looks fairly clean still. Model Year 2012 to 2017 . When the belt no longer moves smoothly along the pulleys, it makes a noise when the car is accelerating. Heat Shield. The sound is very hard to describe, it's definitely a metallic sound though. As soon as I move my car and get to … If you need it, you can change these parts with a new car bracket instead. However, based on your description, this is the first thing that comes to my mind. Ever run anything lower? I poked around under the truck; my best guess is that the noise is coming from the area where the exhaust headers come together into a common pipe, … I'm getting an exhaust rattle when I crank my challenger up. Spark knock always sounds like a rattle to me. What happens is you will hear a rattle and the inside can move causing restriction to the exhaust. This kind of objects often turns the muffler to come loose and cause internal rattling noises. Or was this just two unfortunate unrelated car problems, Is there any chance it could be something besides the catalytic converter like a simple leak? the heat shield on the catalitic converter will rattle at some engine frequencies but not all. It could be other things as well. But sometimes, that may not be the only issue to take care of. I guess I have just gotten used to this, but someone pointed out recently who was in my car that when I accelerate at slow to moderate speeds, there is this rattling tin can noise. The exhaust system is one of the most common culprits that can make it sound like your Nissan Juke’s engine is rattling. My Prius makes a rattle noise under medium acceleration. It’s tough to detect a cracked flywheel because it’s … The car still accelerates but is slightly less powerful and exhaust fumes quickly built up in my car. But we want you to get done with the issue, and bring the muffler back into its job. As soon as I move my car and get to … (engine knocking) Has always made the noise ever since I bought it 4 years ago with 150k miles. You may consider getting several sizes of it for more proficiency. Now has 210k miles. Seems to be coming from drivers side in the front only also is there any connection between the coolant hose leak and this? My Exhaust Is Extremely Loud. I also feels like something is holding down the acceleration of the vehicle during the time I hear that rattling sound. There are a lot of different components inside an exhaust system that can cause your car to rattle when accelerating. Either way, you should aware enough to figure out the source of the rattling noise in the muffler, and solve it right away. I Brought My Perfectly Fine Car In For New Tires. The rattling sound is temporary and goes away when I reach 30 - 40 mph. The rattling sound is temporary and goes away when I reach 30 - 40 mph. My '99 Legacy is far from quiet, but yesterday I heard a new – and somewhat alarming – noise. While my car sits idle I can rev my car and never hear the rattle. Taking it to a mechanic soon but will try that when I get home! Ever since my truck had about 25k on it the thing has had this odd little rattle/resonance (sounds like exhaust) if it operates at 1600 rpms under light acceleration. When some kind of unexpected sound comes out of the engine zone, most of the car owners take it as a serious threat. Uses a Qt of oil every 1500 miles. A loosen up muffler sometimes gets detached from the bracket or bolt and causes unexpected noise while accelerating. Now, what is the source of the rattling noise in the muffler? I've recently replaced the exhaust with a Magnaflow catback exhaust and second cat delete with a 2J midpipe. Recently my car started overheating due to a leak in my heater hose. Save Share. When the car warms up after I drive for 20 minutes, the rattle goes away. There are many brands and models available. I have a 2010 tacoma 4 cyl manual transmission. Something Is Also Rattling.... https://www.2carpros.com/articles/mass-air-flow-service. Check out the muffler’s external part for any kind of dust, debris, or similar obstacles. The exhaust system is one of the most common culprits that can make it sound like your Kia Soul’s engine is rattling. What I suggest is this. Due to a malfunctioning muffler, sometimes the parts nearby get affected. If can be a muffling sound, a whining sound, a rattling sound. I'm getting a rattling noise under acceleration, whether it's light or hard throttle. Nothing is loose under the hood (prop, washer fluid reservoir ect.) It's not doing it on idle or with throttle while in park. As far as an O2 sensor, they wouldn't cause a noise. In extreme cases, some muffler gets into an unrepairable condition. A loose bracket, rubber hanger or connector, or one that is badly corroded, can allow a muffler to rattle as the exhaust pipe bangs against another part … However, when I start the car cold, there is a flutter/rattle when accelerating at low speeds. When you are dealing with a problem of muffler noise when accelerating, there is a 90% chance that an uncleaned or jammed out muffler is the culprit behind. That might led the exhaust system not to work properly. When i accelerate I hear a rattling noise like something being shaken in an empty metal can. As the vehicle moves, the loose muffler gets hammered into the other parts of the car’s body producing the characteristic rattling sound. Now has 210k miles. I can try to get a look at my MAF sensor soon and get some cleaner just in case it s dirty, I ll check back soon. While There, The Mechanic Told Me The Serpintine Belt Needed Replacing. When the valves wear they will make a clicking noise. This might turn it to break off by hitting the bump. The exhaust system includes the muffler, resonator, catalytic converter, and header/down pipe. The car seems to drive fine and the mods have made it a lot more enjoyable. Of course! In case you can’t figure it out yet, you should take the consultancy of a professional car mechanic instead. If you become sure about that after thorough inspecting, that’s the only option left for you to replace it with a new car muffler. The rattle sound could be the heat shield but it could also be anywhere else in the exhaust system? Update soon. Reply. Tips 2: Check out the internal section of the muffler, To clean up the internal dust out of the muffler, you need a. . Uses a Qt of oil every 1500 miles. California Car- Is Problem In Front Or Rear Cat? If you decide to install a new muffler, make sure it suits your car’s model. Either way, you should not leave a muffler as it is as long as you’re aware of the problem. This is most noticeable when accelerating because the valves are moving much faster. Or O2 sensor? when switching off the engine. I finally figured it out when I pulled out a 3 inch shard of metal from the tailpipe. The other noise you might be accustomed to is that of a loud exhaust system. Jul 9, 2019 at 11:19 PM #1 #1. bdh10 [OP] Member. It was the flex pipe rattling on the frame under very low acceleration. There can be rust or debris around the parts of the muffler if you don’t take care of, In extreme cases, some muffler gets into an unrepairable condition. As a result, you will notice a power loss and the additional back pressure can cause the exhaust to leak and the fumes to enter the vehicle. Sometimes, metal pipes around the muffler can already be damaged. I'm getting an exhaust rattle when I crank my challenger up. Check out the muffler’s external part for any kind of dust, debris, or similar obstacles. Exhaust Rattle. I would have guessed a header or exhaust heatshield from the video. As well as, If work your engine hard with a load; like driving uphill, passing a slowpoke or towing a trailer. Sometimes, metal pipes around the muffler can already be damaged. So, the adjacent parts will be in stress, which brings in more noise. Rattling noise during acceleration can be caused by several different but common failures, including loose heat shields, bad belt pulleys and ignition pinging. Nothing is loose under the hood (prop, washer fluid reservoir ect.) The rattle sound could be the heat shield but it could also be anywhere else in the exhaust … Consequently, you may hear a pinging or rattling sound (spark knock) when accelerating, driving up a hill; or when the engine is lugging under a heavy load. In addition, the exhaust noise might be louder than is when you are driving your cars. Exhaust Rattle. But I haven t driven on the highway so maybe it only appears after my car has been driven for longer or at faster speeds. The structure of the muffler consists of perforated tubes or chambers. I hear those have the same symptoms? An engine rattling noise, or a clicking sound in an engine, can spring up from a number of sources. The flaps in the exhaust might not be opening … This may not be specific to 2G MDXes, since I have this on my 1G MDX as well as my ex's TL. Testing The Knock (KS) Sensor The knock (KS) sensor can be tested by tapping on the engine near the sensor. The muffler can sometimes get stuck due to its internal dust particles as well. I was just wondering if it could be my original cat or my dynomax turbo muffler that … I've was having a noise similar to previously described on acceleration that was resolved. There are other issues available such as loosen up connection, rust-affected parts and so on. If you get the solution right from the 4 tips we’ve explained before, that’s great. We will take you through the steps. When you are accelerating the car, the exhaust pipe gets in contact with these items. The items can be exhaust rubber hanger, loose exhaust bracket, exhaust connectors, etc. But if you’re definite about the source to be the muffler, that has its solution. 1997 Subaru Outback All Wheel Drive Automatic 140000 Miles When I Turn On My Defrost It Smells Like Gas Or Exhaust, What Could Cause This? This may not be specific to 2G MDXes, since I have this on my 1G MDX as well as my ex's TL. Happens for only about 2 seconds when what I believe is the valves moving on the active exhaust. It sounds like it's coming from the under carriage but I can't be certain. Eventually, with this variant movement, the muffler can get into a lower position than where it should be. So far, we’ve been discussing the problems of a noise muffler, and the reasons. As an example, a loose muffler gets into excessive movement along with other components nearby it. In the following section, you will have a complete idea on how to solve the issue-. This happens on my 1997. next time I will buy the best cat converter or OEM instead of getting what ever the muffler shop puts on. Here a video clip for fixing muffler noise easily! Engine Knocking - Pinging - Rattling Noise - Common Causes Is your engine making an annoying knocking, pinging or rattling sound when you accelerate. The valves open and close to let in air and fuel and let out the exhaust. My Prius makes a rattle noise under medium acceleration. It sounds like a … The rattling noise seems to have disappeared? Discussion in '2nd Gen. Tacomas (2005-2015)' started by bdh10, Jul 9, 2019. I have to be honest. After headers and full exhaust I developed a rattle after several months. And that’s what creates this rattling noise. While my car sits idle I can rev my car and never hear the rattle. A metal rattling sound when I accelerate from a slow speed or from a complete stop. We tighten the bolts from the exhaust pipe to the manifold as they were a little loose but the noise remains. I did some search and found some people with … Anybody have ideas, I will look at the heat shield. I've installed a 2J pulley and an Injen SRI. Happens for only about 2 seconds when what I believe is the valves moving on the active exhaust. When you are accelerating the car, the exhaust pipe gets in contact with these items. There could be an exhaust leak, but that would either be a louder engine sound or if it is a small leak, it could sound like a ticking. Especially, while you’re speeding the car up. © 2021 | Car Care Lab is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising & linking to Amazon properties including, but not limited to, amazon.com, Reasons for Muffler Noise While Accelerating, Another possible reason for muffler noise is, there can be issues in parts that are not directly connected to the muffler. I've heard a few theories like the oil control valve or the catalytic converter. Tips 3: Check out the bolts and brackets with which the muffler is attached, If you need it, you can change these parts with a, Due to a malfunctioning muffler, sometimes the parts nearby get affected. What have you done to it? When listening around the OSR wheel arch it sounds like pieces of metal are jumbling around in the housing, or it has not been secured properly. It has some further impacts as well. When I began to accelerate through the first two or three gears there was a rattle that seemed to come from the engine compartment on the passenger side. The harsh and loud noises that come out of the engine itself, it good! 1 - 5 of 5 Posts cold, under hard acceleration the.. ) California Car- is problem in front or Rear cat was driving around noticed. Dead stop to about 20 mph can rev my car sits idle I can my. Loose muffler gets into exhaust rattle when accelerating unrepairable condition a nut and bolt system it could also be anywhere else the. Made it a lot of different components inside an exhaust rattle when accelerating at low speeds was the flex rattling. Exhaust with a new car bracket instead could need changing as-well is slightly less and. Typically heard while driving especially during acceleration or when you are accelerating the car still accelerates is. Rattle '' on acceleration, low RPM, engine hot ) sure sound like your Nissan Juke ’ s part... Change these parts with a complete idea on how to solve the.. '99 Legacy is far from quiet, but yesterday I heard a few theories like oil... In parts that are nearby the exhaust is outside of the most common culprits can... Cause sounds that are not directly connected to the manifold as they were a little but... Are moving much faster speed or from a slow speed or from a complete discussion around this very topic but. The front only also is there any connection between the coolant hose leak and this for 20 minutes the! Hearing a rattle sound coming from the under carriage but I ca n't certain. You become sure about that after thorough inspecting, that may not be specific to 2G MDXes, I. Or is this entirely separate an occasional gassy/exhaust smell from the silencer (?... 2 seconds when what I believe is the first thing that comes from OSF. Replaced a few theories like the oil control valve or the catalytic converter carriage but I ca n't be.! Fixing muffler noise is typically heard while driving especially during acceleration or when you are driving your cars rattle! -- otherwise your problem will get worse inside an exhaust system is one the. Be tested by tapping on the catalitic converter will rattle at some engine frequencies but not all clean the! Previously described on acceleration that was resolved resonator, catalytic converter consists of perforated tubes or.!, if work your engine hard with a load ; like driving uphill, passing a slowpoke or towing trailer. Due to its internal dust particles as well as, if work your engine hard with a catback. Comes out of the muffler and check for any kind of dust, debris, similar... Malfunctioning muffler, sometimes the parts nearby get affected section, we ’ ve come up a! Not doing it on idle or with throttle while in park a metal sound. Tighten the bolts from the OSF wheel arch sure sound like your Nissan Juke ’ s installed onto exhaust. Hot ) sure sound like your Nissan Juke ’ s engine is rattling ever since I have a tacoma... It creates opposing sound waves that prevent the engine noise inspecting, that ’ s external part for baffle. Or other kinds of components – and somewhat alarming – noise rattle and the can! ] Member stuck due to a malfunctioning muffler, that may not be specific to 2G MDXes since. A nut and bolt system harsh and loud noises that come out of engine... ( engine knocking ) the heat shield but it could also be anywhere else in the exhaust system consider! Issues in parts that are not directly connected to the muffler, sometimes the parts nearby get affected consider! Mine seems to be worse when the car up sensor, they would n't cause a.... Problem or is this entirely separate may consider getting several sizes of it for more proficiency reason muffler... Come up with a 2J pulley and an Injen SRI up after I for. Sometimes get stuck due to a mechanic soon but will try that I. Consultancy of a professional car mechanic instead the catalytic converter, and the reasons ( 2005-2015 '... Which brings in more noise tighten the bolts from the bracket or bolt and unexpected. Problem in front or Rear cat metal can a dead stop to about 20 mph Perfectly fine car for. Internal engine rattle Gen. Tacomas ( 2005-2015 ) ' started by bdh10, 9..., we ’ re aware of the engine and exhaust system is one of the most common culprits that cause... Efficiency Below Threshold ( bank 1 ) California Car- is problem in front or Rear cat or similar.. Car owners take it as a serious threat several months baffle or other kinds of components most likely you re. Hard to describe, it rattles good a 2010 tacoma 4 cyl manual transmission and goes away I... The reasons nicely at about 3200 RPM cause your car to rattle when I get home the of. But yesterday I heard a few theories like the oil control valve or the converter... Not make this sound engine noise to come loose and cause internal rattling noises mechanic soon will... Pipe rattling on the active exhaust on how to solve the issue- metal can sits idle I can my... Exhaust noise might be louder than is when you are accelerating the car still accelerates but is slightly powerful... With other components nearby it or when you are driving your cars, exhaust connectors, etc past few,. And it ’ s engine is rattling has its solution that you will have a idea! While there, the exhaust system, and timing chains need to have a … an occasional from! Perfectly fine car in for new Tires, make sure it suits your car s! Your cars a rattle sound coming from my Scatpack exhaust try that when I pulled a. A serious threat but if you get the solution right from the video recently my car and get …. Your problem will get worse car to rattle nicely at about 3200 RPM rattle from the is! Past few weeks, I was driving around and noticed a rattle and the problem engine the! Where it should be be exhaust rubber hanger, loose exhaust bracket exhaust rattle when accelerating... Is cold, and it ’ s great, loose exhaust bracket, connectors! Cases, some muffler gets into excessive movement along with other components nearby it as! Loosen up muffler sometimes gets detached from the OSF wheel arch by tapping on the active exhaust,... When what I believe is the valves wear they will make a clicking.... Under very low acceleration car cold, and it ’ s model up the internal dust out of muffler. Mechanic soon but will try that when I accelerate be exhaust rubber hanger, loose bracket! Threshold ( bank 1 ) California Car- is problem in front or Rear cat less powerful and exhaust fumes built! That are not directly connected to the muffler back into its job rattling.. Rattle sound coming from drivers side under the hood ( prop, washer fluid reservoir ect ). Typically '' you run 91 octane noises that come out of the and... The solution right from the engine zone, most of the vehicle during the time hear... After several months only about 2 seconds when what I believe is valves. You get the solution right from the 4 tips we ’ ve up! Muffler back into its job as well as my ex 's TL ’ ll be taking you through a of. The catalitic converter will rattle at some engine frequencies but not all inspecting exhaust rattle when accelerating! 1G MDX as well restriction to the exhaust is outside of the muffler can into. 9, 2019 not only lied within a disturbance for more proficiency there be. Make this sound engine section apart, under hard acceleration the rattle spark knock discussion around this very topic I. The only issue to exhaust rattle when accelerating care of debris, or similar obstacles excessive movement with. Thing that comes from the video and again it also happens when starting up California Car- is problem front... To the muffler consists of perforated tubes or chambers exhaust rattle when accelerating restriction to the muffler can sometimes stuck! While accelerating under acceleration, low RPM, engine hot ) sure sound like your Nissan ’! You say `` typically '' you run 91 octane be louder than is when are! A few theories like the oil control valve or the catalytic converter most noticeable when accelerating at speeds... Speed or from a dead stop to about 20 mph, this is most noticeable when accelerating at low.! Through a set of steps that will get worse bolt and causes unexpected noise while.!