odd sound at 5000 rpm's

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Old 05-20-2006, 09:44 PM
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Default odd sound at 5000 rpm's

opened my 4.2 up getting on the highway today and got an odd grrrrrrbling sound at around 5 to 5500 rpm's stop as soon as i let off the gas, couldnt reproduce it unless i realy stomped on it.. side note last summer i noticed that one of my cats had a rattle but dosnt at present. cars stats 155k 1993 V8Q auto.
Any ideas? You guys realy helped with a hot start issue last summer, was the crank sensor..changed that and the rpm sensor..as sug, of the form..
Old 05-21-2006, 04:11 PM
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Timing belt worn?
Old 05-21-2006, 07:19 PM
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Default Re: Timing belt worn?

TB...didnt think of that..was checked by audi last yr, was told i had about 30k left...but that was 20k ago....ill def,check the belt.
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