Help! Knocking! Difference between bad driveshaft and bad differential
12-13-2007, 07:44 PM
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Help! Knocking! Difference between bad driveshaft and bad differential
Ive got loud knocking sound coming from center/rear of the car as i accelerate when the car is warm. I went to a few shops, noone can diagnose it, its either the driveshaft (cv joint in it) or the differential. what symptoms would one give?
any tips would be appreciated, this blows
any tips would be appreciated, this blows
12-13-2007, 07:48 PM
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I had a bad driveshaft on my last A4
You could physically see the exhaust pipe moving up and down as the driveshaft hit it (it was in the rear) it ended up snapping about 5 miles after it first started knocking. But mine was the same as you described. It was a loud knocking sound coming from the rear of the car. Have you taken it to a legit VAG independent shop?
12-13-2007, 07:53 PM
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Re: I had a bad driveshaft on my last A4
Ive actually read your post about that, ive had this problem for a few months already its just getting worse and worse, shoulda snapped a long time ago if that was it im guessing
Ive taken the car to a few shops around here, but having a hard time finding professionals, really time to get this fixed
Ive taken the car to a few shops around here, but having a hard time finding professionals, really time to get this fixed
12-13-2007, 07:57 PM
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Re: diffs don't usually fail, actually i never hear of an Audi diff fail
this car had 2 19s on the rear with stock 17s in front for about a month, so that could eff something up a long time ago, btw NOT my fault!
12-13-2007, 08:09 PM
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also, the car will only do it when its warm, the worst is coming off the hway and
coming to a light, the thing will thump nice and hard as i accelerate through 1st, 2nd..
interesting how it doesnt do it when the car is cold
interesting how it doesnt do it when the car is cold
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12-14-2007, 07:48 AM
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yes i absolutely hate my dealer, buncha morons
only good thing you get out of them is the carwash afterwards. they dk anything about audi it seems and just charge 110 an hr for bull****. maybe ill go but i have to be drunk, thanks for ur help guys