And that’s what creates this rattling noise. The Transmission Fluid Level. This might turn it to break off by hitting the bump. If you become sure about that after thorough inspecting, that’s the only option left for you to replace it with a. . I hear those have the same symptoms? Nothing is loose under the hood (prop, washer fluid reservoir ect.) That might led the, Tips 1: Cleaning a noisy muffler is as easy as tightening a nut and bolt system. Or O2 sensor? 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. Of course! You say "typically" you run 91 octane. When i accelerate I hear a rattling noise like something being shaken in an empty metal can. These items can get accidentally in touch with the muffler, and that’s what creates the rattling noise in the muffler. A metal rattling sound when I accelerate from a slow speed or from a complete stop. Now and again it also happens when starting up. 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. 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. While my car sits idle I can rev my car and never hear the rattle. Now, what is the source of the rattling noise in the muffler? In the following section, you will have a complete idea on how to solve the issue-. Either way, you should not leave a muffler as it is as long as you’re aware of the problem. The effect of a noisy muffler is not only lied within a disturbance. I was just wondering if it could be my original cat or my dynomax turbo muffler that … Heat Shield. Cracked Flywheel or Flexplate Repair Costs. When I Turn On My Defrost It Smells Like Gas Or Exhaust, What Could Cause This? I also feels like something is holding down the acceleration of the vehicle during the time I hear that rattling sound. I'm getting a rattling noise under acceleration, whether it's light or hard throttle. I was told my air filter could need changing as-well. In case you can’t figure it out yet, you should take the consultancy of a professional car mechanic instead. I got it replaced a few days ago and the problem was solved! Anymore acceleration to speeds beyond that do not make this sound. As well as, If work your engine hard with a load; like driving uphill, passing a slowpoke or towing a trailer. It’s tough to detect a cracked flywheel because it’s … What have you done to it? As the vehicle moves, the loose muffler gets hammered into the other parts of the car’s body producing the characteristic rattling sound. We tighten the bolts from the exhaust pipe to the manifold as they were a little loose but the noise remains. Something Is Also Rattling.... https://www.2carpros.com/articles/mass-air-flow-service. Engine Knocking - Pinging - Rattling Noise - Common Causes Is your engine making an annoying knocking, pinging or rattling sound when you accelerate. While the exhaust is outside of the engine itself, it can often cause sounds that are confused for an internal engine rattle. 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. In addition, the exhaust noise might be louder than is when you are driving your cars. I have to be honest. Drive belts, timing belts, and timing chains need to have a … 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. This may not be specific to 2G MDXes, since I have this on my 1G MDX as well as my ex's TL. 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. The car still accelerates but is slightly less powerful and exhaust fumes quickly built up in my car. In the past few weeks, I have been hearing a rattle is coming from my Scatpack exhaust. Update soon. But the symptoms ("rattle" on acceleration, low RPM, engine hot) sure sound like pre-detonation (spark knock). Another possible reason for muffler noise is, there can be issues in parts that are not directly connected to the muffler. When the car is cold, under acceleration, it rattles good. Exhaust Rattle. My '99 Legacy is far from quiet, but yesterday I heard a new – and somewhat alarming – noise. An engine rattling noise, or a clicking sound in an engine, can spring up from a number of sources. Ever run anything lower? Anybody have ideas, I will look at the heat shield. The baffles in my muffler blew apart, under hard acceleration the rattle was terrible but at cruising speed it was normal. If can be a muffling sound, a whining sound, a rattling sound. The items can be exhaust rubber hanger, loose exhaust bracket, exhaust connectors, etc. 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. 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. 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. Taking it to a mechanic soon but will try that when I get home! I would have guessed a header or exhaust heatshield from the video. There are many brands and models available. When you hear a rattling sound, the source can be one of the many parts of the engine and exhaust system. System Efficiency Below Threshold (bank 1) Rattling noise during acceleration can be caused by several different but common failures, including loose heat shields, bad belt pulleys and ignition pinging. 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. 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. So maybe under acceleration but not while crusing. I'm getting an exhaust rattle when I crank my challenger 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. 1997 Subaru Outback All Wheel Drive Automatic 140000 Miles 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. As soon as I move my car and get to … The rattle sound could be the heat shield but it could also be anywhere else in the exhaust system? So far, we’ve been discussing the problems of a noise muffler, and the reasons. Now has 210k miles. The exhaust system is one of the most common culprits that can make it sound like your Kia Soul’s engine is rattling. This kind of objects often turns the muffler to come loose and cause internal rattling noises. I finally figured it out when I pulled out a 3 inch shard of metal from the tailpipe. 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