The structure of the muffler consists of perforated tubes or chambers. Maybe they forgot something when … I finally figured it out when I pulled out a 3 inch shard of metal from the tailpipe. These items can get accidentally in touch with the muffler, and that’s what creates the rattling noise in the muffler. I've was having a noise similar to previously described on acceleration that was resolved. Spark knock always sounds like a rattle to me. Now and again it also happens when starting up. 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. If can be a muffling sound, a whining sound, a 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. when switching off the engine. There are many brands and models available. You may consider getting several sizes of it for more proficiency. The exhaust system is one of the most common culprits that can make it sound like your Nissan Juke’s engine is rattling. We tighten the bolts from the exhaust pipe to the manifold as they were a little loose but the noise remains. What I suggest is this. 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. 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. Anymore acceleration to speeds beyond that do not make this sound. But if you’re definite about the source to be the muffler, that has its solution. This may not be specific to 2G MDXes, since I have this on my 1G MDX as well as my ex's TL. An engine rattling noise, or a clicking sound in an engine, can spring up from a number of sources. When the car is cold, under acceleration, it rattles good. Eventually, with this variant movement, the muffler can get into a lower position than where it should be. The items can be exhaust rubber hanger, loose exhaust bracket, exhaust connectors, etc. Code P0420= Cat. This can cause the rattling noise that you will hear from under the vehicle. You say "typically" you run 91 octane. So, in this section, we’ll be taking you through a set of steps that will get it done right away. Has always made the noise ever since I bought it 4 years ago with 150k miles. Post Reply. My '99 Legacy is far from quiet, but yesterday I heard a new – and somewhat alarming – noise. Discussion in '2nd Gen. Tacomas (2005-2015)' started by bdh10, Jul 9, 2019. It sounds like it's coming from the under carriage but I can't be certain. Heat Shield. A muffler is a part of the exhaust system, and it’s installed onto the exhaust pipe. Upon popular demand, we’ve come up with a complete discussion around this very topic. It's not doing it on idle or with throttle while in park. Happens for only about 2 seconds when what I believe is the valves moving on the active exhaust. Now, what is the source of the rattling noise in the muffler? I have a 2010 tacoma 4 cyl manual transmission. It’s tough to detect a cracked flywheel because it’s … Sometimes, metal pipes around the muffler can already be damaged. But we want you to get done with the issue, and bring the muffler back into its job. Take a rubber mallet and tap pm the exhaust to see if you can locate the noise. Ever run anything lower? I'm getting an exhaust rattle when I crank my challenger up. You may consider getting several sizes of it for more proficiency. 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? Exhaust Rattle. It creates opposing sound waves that prevent the engine noise to come out. The exhaust system includes the muffler, resonator, catalytic converter, and header/down pipe. What happens is you will hear a rattle and the inside can move causing restriction to the exhaust. And that’s what creates this rattling noise. 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. This kind of objects often turns the muffler to come loose and cause internal rattling noises. That might led the, Tips 1: Cleaning a noisy muffler is as easy as tightening a nut and bolt system. I got it replaced a few days ago and the problem was solved! The car still accelerates but is slightly less powerful and exhaust fumes quickly built up in my car. An occasional gassy/exhaust smell from the OSF wheel arch. 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. 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. Today, I was driving around and noticed a rattle sound coming from the drivers side under the hood when I accelerate. 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. 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. Reply. Raised back up and all fixed. I finally figured it out when I pulled out a 3 inch shard of metal from the tailpipe. 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. I'm getting an exhaust rattle when I crank my challenger up. As far as an O2 sensor, they wouldn't cause a noise. I'm getting a rattling noise under acceleration, whether it's light or hard throttle. 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. The muffler can sometimes get stuck due to its internal dust particles as well. After headers and full exhaust I developed a rattle after several months. Due to a malfunctioning muffler, sometimes the parts nearby get affected. Broken Belt Tensioner or Chain Tensioner. When you hear a rattling sound, the source can be one of the many parts of the engine and exhaust system. There are other issues available such as loosen up connection, rust-affected parts and so on. Another possible reason for muffler noise is, there can be issues in parts that are not directly connected to the muffler. If you become sure about that after thorough inspecting, that’s the only option left for you to replace it with a. . Tips 2: Check out the internal section of the muffler, To clean up the internal dust out of the muffler, you need a. . 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. Now has 210k miles. There are a lot of different components inside an exhaust system that can cause your car to rattle when accelerating. 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. This can cause the rattling noise that you will hear from under the vehicle. As an example, a loose muffler gets into excessive movement along with other components nearby it. It was the flex pipe rattling on the frame under very low acceleration. While my car sits idle I can rev my car and never hear the rattle. 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. Could that possibly mean anything for this problem or is this entirely separate? In extreme cases, some muffler gets into an unrepairable condition. I've installed a 2J pulley and an Injen SRI. A loosen up muffler sometimes gets detached from the bracket or bolt and causes unexpected noise while accelerating. It sounds like a … 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. In addition, the exhaust noise might be louder than is when you are driving your cars. Update soon. Of course! And that’s what creates this rattling noise. But the symptoms ("rattle" on acceleration, low RPM, engine hot) sure sound like pre-detonation (spark knock). In the following section, you will have a complete idea on how to solve the issue-. Engine Knocking - Pinging - Rattling Noise - Common Causes Is your engine making an annoying knocking, pinging or rattling sound when you accelerate. The bearings are what allow the cam and crankshaft to spin for thousands of miles and millions of revolutions. Or O2 sensor? Sometimes, metal pipes around the muffler can already be damaged. This may not be specific to 2G MDXes, since I have this on my 1G MDX as well as my ex's TL. Uses a Qt of oil every 1500 miles. I Brought My Perfectly Fine Car In For New Tires. We will take you through the steps. Acceleration Rattle. In addition, the exhaust noise might be louder than is when you are driving your cars. Cracked Flywheel or Flexplate Repair Costs. Exhaust Rattle. 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. In case you can’t figure it out yet, you should take the consultancy of a professional car mechanic instead. The car seems to drive fine and the mods have made it a lot more enjoyable. Taking it to a mechanic soon but will try that when I get home! When i accelerate I hear a rattling noise like something being shaken in an empty metal can. 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. As soon as I move my car and get to … The baffles in my muffler blew apart, under hard acceleration the rattle was terrible but at cruising speed it was normal. We’re about to show you the possible reasons for muffler noise while accelerating, and its remedies. Today, I was driving around and noticed a rattle sound coming from the drivers side under the hood when I accelerate. If you decide to install a new muffler, make sure it suits your car’s model. But sometimes, that may not be the only issue to take care of. While the exhaust is outside of the engine itself, it can often cause sounds that are confused for an internal engine rattle. the heat shield on the catalitic converter will rattle at some engine frequencies but not all. When I Turn On My Defrost It Smells Like Gas Or Exhaust, What Could Cause This? In the past few weeks, I have been hearing a rattle is coming from my Scatpack exhaust. Uses a Qt of oil every 1500 miles. When you are accelerating the car, the exhaust pipe gets in contact with these items. The effect of a noisy muffler is not only lied within a disturbance. Happens for only about 2 seconds when what I believe is the valves moving on the active exhaust. The other noise you might be accustomed to is that of a loud exhaust system. The rattling noise seems to have disappeared? I have to be honest. 1997 Subaru Outback All Wheel Drive Automatic 140000 Miles While There, The Mechanic Told Me The Serpintine Belt Needed Replacing. My Prius makes a rattle noise under medium acceleration. Either way, you should aware enough to figure out the source of the rattling noise in the muffler, and solve it right away. Something Is Also Rattling.... https://www.2carpros.com/articles/mass-air-flow-service. 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 … The rattle sound could be the heat shield but it could also be anywhere else in the exhaust … There are many brands and models available. And the job of the muffler is to reduce the noise that comes from the engine section. When the belt no longer moves smoothly along the pulleys, it makes a noise when the car is accelerating. That might led the exhaust system not to work properly. Check out the muffler’s external part for any kind of dust, debris, or similar obstacles. Take help from the manufacturers if needed. So far, we’ve been discussing the problems of a noise muffler, and the reasons. 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. If you get the solution right from the 4 tips we’ve explained before, that’s great. What have you done to it? Especially, while you’re speeding the car up. Or the catalytic shield. Seems to be coming from drivers side in the front only also is there any connection between the coolant hose leak and this? I have a 2000 S-10 with a 2.2L, regular cab and I have 136,xxx miles on it. © 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. Waves that prevent the engine and exhaust fumes quickly built up in my muffler blew,. Catalitic converter will rattle at some engine frequencies but not all noisy muffler is not lied... Mechanic soon but will try that when I start the car, the adjacent parts will in... The adjacent parts will be in stress, which brings in more noise as soon as move... To a mechanic soon but will try that when I accelerate clip for fixing noise... 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Does this too, rattles whenever I accelerate full exhaust I developed a rattle sound coming from my Scatpack.!