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Hello all. I was hoping for a little insight into a slight issue I have.
I have a 2007 Camry le 4 cylinder. When under a load on the highway there is an occasional buzzing that occurs when accelerating (sounds like a piece of metal vibrating at a high pitch). It only happens under about 3000 RPMs and the noise doesn’t occur any other time (idle, reving the engine while idle, slow speeds, etc.). Today I got it up on a lift and checked all of the heat shields under the hood and around the exhaust under the car. Nothing seemed loose. I had two mechanics look at it and one thinks that the exhaust flex pipe is the culprit, while the other insists that this is a known issue with the resonator (said a small piece may have broken off of a baffle inside and is vibrating). Are either of these components well known to cause this type of issue? I’d rather not replace both if one is frequently the cause.
Thanks for any advice.
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