I tie-wrapped a microphone under the rear of the car to record this noise. I uploaded the wav file to a hosting site as this site doesn't accept audio files. Hopefully the link will work. The noise only occurs after driving 15 - 25 miles. Luckily the noise occurred at a location where I could avoid traffic. Unfortunately the reason there was no traffic was because the road was covered with gravel for repairs. So ignore the road noise, but you will hear a metallic noise like dragging tin cans. As I accelerate, the noise goes faster. I called my mechanic on my cell phone so he could listen to the noise. He couldn't diagnose the cause in that manner, but said come right in so he could look at it. Since there was little traffic I decided to try going in reverse even accelerating in reverse: no metallic noise. Now no noise going forward! Going in reverse temporarily cured the problem. Is that some sort of clue? Drove the 20 miles to the mechanic and the noise wouldn't come back so didn't bother him. Hopefully I can repeat tomorrow with better luck, but would certainly appreciate any comments.
mb1985rearendnoise300dt.wav - 0.33MB
04-24-2007, 11:42 PM
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