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The mysterious knock

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Old May 24th, 2022, 22:40   #11
NMB
Volvo XC90 T6 & XC90 D5
 

Last Online: Mar 19th, 2024 17:44
Join Date: Jul 2020
Location: Marple
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Originally Posted by cbv8 View Post
Are you sure it isn't the front mount as the rubber bush perishes and then start to knock on acceleration/deceleration etc and its the easiest to change or perhaps the wishbones bolts are loose and need nipping up?
Not the gearbox tie rod - its nice and firm.
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Old May 29th, 2022, 17:06   #12
NMB
Volvo XC90 T6 & XC90 D5
 

Last Online: Mar 19th, 2024 17:44
Join Date: Jul 2020
Location: Marple
Lightbulb SOLVED!!!!! Yes!!!!!😊😊😊😊

Hi all,

Just wanted to report back but I have finally solved this mysterious knock/vibration on acceleration. Having previously checked all my bushes, control arms, wheel bearings, lower ball joints wishbones et cetera I have finally found what the noise was being caused by.

It was, wait for it, the engine mount that sits beneath the serpentine pulley on the driver-side. On inspection it didn’t look that the Bush was significantly deteriorated but on removal it was proper buggered. £41 spend on a new bush has completely solved this issue and took me under two hours to replace – I did do a few other little jobs in the wheel well at the same time.

Just sharing this news in case anyone else has this unusual noise that they can’t track down – check this engine mount!

Hope this is of help.

Nigel.

Last edited by NMB; May 29th, 2022 at 17:46.
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