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Light knocking from under car - drive backlash / play.

Posted: Mon Feb 21, 2011 9:02 pm
by lugars4
Recently i noticed at very low speed, such as when the engine speed at tickover almost exactly matches the wheel speed for 1st gear, i hear a light knocing fron under the centre of the car. Like there is some backlash in the drive.

Most noticable when reversing and lifting on / off the clutch, its a light audiable knock or clunk. Sounds like it comes from below the gear stick area. possibly slightly to the drivers side.

I could almost swear that it only started recently, but i may just be noticing it more now that i am aware of it.

Is this normal? am i being too fussy? or has anyone experienced anything similar. Its not noticably loud, but i can heat enough to question it.

Appreciate any input.

Cheers.

RE: Light knocking from under car - drive backlash / play.

Posted: Mon Feb 21, 2011 10:03 pm
by Ice_Coffee
Do you have any idea if your car used to have a miltek ?? I only ask because a poorly refitted exhaust would cause your symptoms.

Posted: Mon Feb 21, 2011 11:27 pm
by lugars4
Not that i am aware of no. . . .

Re: Light knocking from under car - drive backlash / play.

Posted: Tue Mar 15, 2011 10:30 pm
by lugars4
Turned out to be the propshaft had excess play, Replaced under Warranty,

Re: Light knocking from under car - drive backlash / play.

Posted: Sat Jun 01, 2024 11:37 pm
by lugars4
And 13 years / 33k miles later, i am hearin a similar sound again.

This time i need to inspect myself..... Quite loud when making low speed manouvers rocking on/off the drive train slack.

Re: Light knocking from under car - drive backlash / play.

Posted: Mon Jun 03, 2024 3:51 pm
by coffey555
Audi don't sell the centre bearing on its own, it can only be purchased with the complete prop-shaft assembly..... which is certainly not cheap!

When we did my underside restoration, we ordered up a 034 Motorsport bearing and refurbished the existing prop.

Runs perfectly.

https://www.034motorsport.com/driveshaf ... 7-rs4.html

https://www.awesomegti.com/034motorspor ... gs-rs4-b7/

Re: Light knocking from under car - drive backlash / play.

Posted: Mon Jun 03, 2024 9:00 pm
by lugars4
Great thanks for sharing.

Will inspect mine shortly.