Stock 98LS1

I have checked everything on mine too, and it has the some what of the same symptoms. Only under WOT I hear a rattling noise coming from the drivetrain like if the u joint is bad, again only UNDER WOT, because I turn it on nothing, I drive normal nothing. My car is an A4 with 150k+ miles transmission rebuild at 130k, trying to figure this issue out too.


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bongva

iTrader: (7)

i had a similar issue, but it only happened everyonce in awhile. found out all the dowel pins from my monster clutch came loose and they were rattling/bouncing around the bell housing.

bad_408_vert

iTrader: (6)

It seems there are a few issues revolving around the same noise. This makes the most sense so far since I had one of my 02 sensors replaced not too long ago. The noise was gone for a while and it came back. Before I knew what it was, the car used to act like it was mis firing one a start up every once a while.

jaysan

iTrader: (8)

I think this could be my problem my car is an m6 , but did the noise sound like it was coming from the engine bay or the steering wheel ?

Edit my car is 100% stock though

Latch

iTrader: (8)

I had a busted catalytic converter on my car but the rattle was constant, not just at WOT. For a few months there was no SES light but then it eventually came on. Dealer replaced both cats for free.

Danny2tek

iTrader: (1)

mine sounded like if it were the heat shields and it turned out to be were the collector met the ORY wasn't making a good clamp

Rybar

iTrader: (11)

Please explain how you solved this? Was it just with a tune?