Drive train noise
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Joined: Dec 2004
Posts: 99
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From: Orlando Fl
Drive train noise
I have a 2000 A4 and I have developed a low grumbling/vibration type noise that appears to becoming from the drive train or exhaust. It only appears at low rpm when the trans is engaged. as soon as the rpm increase the noise disappears. when slowing done to 5 - 10 MPH the nosie reappears- while sitting still with the trans engaged, the nosie may be there or may not. Real strange. sounds like an exhaust vibration .Anyone experience this or have any thoughts? Thanks Duds.
Instructor
Joined: Oct 2004
Posts: 168
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From: Woodstock CT
I have the exact same noise, only happens when going along at idle in traffic or when coming to a stop. I have been trying to find the noise now for a while. Seems to be coming from the drivers side and can be felt and heard through out the car. First I thought it was the hatch rattling but still does it when hatch is open. Starting to lean towards drivetrain or suspension noise but to many possibilities to diagnose. Also 2000 A4
Do you also have a high speed vibration, around 70-80 mph, coming from the rear?
Do you also have a high speed vibration, around 70-80 mph, coming from the rear?
Last edited by 2000coupe; Jun 13, 2005 at 11:31 AM.
Melting Slicks
Joined: Apr 2005
Posts: 3,469
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My 99 does that too. I've only had it a few months, so I don't know if it's normal or something I should be worried about. To me, it sounds like an exhaust rattle resonance. My car has the Ti exhaust on it, for what it's worth. I'll be watching this tread to see what others have to say...
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Joined: Dec 2004
Posts: 99
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From: Orlando Fl
High spped vibration
I do not have the high speed vibration but it is interesting that the issue exists with other owners. It would be great to get some input from someone who had the problem and found a fix. Thanks for the input Duds
Pro
Joined: Apr 2002
Posts: 714
Likes: 251
From: Grand Island, Florida
I had a similar problem with a 2000 A4, too. It was the catalytic converter on the driver's side. The baffles, or whatever they're callled, had broken loose inside and made this sound but only at idle or low speed. Once the exhaust volume rose, the noise would stop. Also, heard of an O2 sensor causing similar noises-again loose components in the sensor. Hope this helps.
Bronk
Bronk
Instructor
Joined: Oct 2004
Posts: 168
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From: Woodstock CT
Originally Posted by Bronk
I had a similar problem with a 2000 A4, too. It was the catalytic converter on the driver's side. The baffles, or whatever they're callled, had broken loose inside and made this sound but only at idle or low speed. Once the exhaust volume rose, the noise would stop. Also, heard of an O2 sensor causing similar noises-again loose components in the sensor. Hope this helps.
Bronk
Bronk
