Light knocking from under car - drive backlash / play.

4.2 V8 32v Naturally Aspirated - 414 bhp
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lugars4
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Light knocking from under car - drive backlash / play.

Post by lugars4 » Mon Feb 21, 2011 9:02 pm

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.

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

Post by Ice_Coffee » Mon Feb 21, 2011 10:03 pm

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.

lugars4
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Location: Kent

Post by lugars4 » Mon Feb 21, 2011 11:27 pm

Not that i am aware of no. . . .

lugars4
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Re: Light knocking from under car - drive backlash / play.

Post by lugars4 » Tue Mar 15, 2011 10:30 pm

Turned out to be the propshaft had excess play, Replaced under Warranty,
06 - B7 RS4 Saloon - Milltek Non-Res Valved. BMC Filter.

lugars4
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Re: Light knocking from under car - drive backlash / play.

Post by lugars4 » Sat Jun 01, 2024 11:37 pm

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.
06 - B7 RS4 Saloon - Milltek Non-Res Valved. BMC Filter.

coffey555
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Re: Light knocking from under car - drive backlash / play.

Post by coffey555 » Mon Jun 03, 2024 3:51 pm

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/
Misano Red RS4 B7 Avant

lugars4
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Posts: 318
Joined: Tue Apr 27, 2010 3:34 pm
Location: Kent

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

Post by lugars4 » Mon Jun 03, 2024 9:00 pm

Great thanks for sharing.

Will inspect mine shortly.
06 - B7 RS4 Saloon - Milltek Non-Res Valved. BMC Filter.

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