knocking noises

0375cdt · 9th September 2014, 20:01

Hello all,

This query may have been asked before but I can not really find an answer when searching.

I have noticed over the last few months a knocking noise under the car, seems more on the passenger side, which today has got worse.

I originally thought I had left my garden fork in the boot and it was knocking about. This was not it as it was empty and I will hear this noise mostly over bumps (normal town driving speeds 20-30 mph) or if the road is rough. Never at motorway speeds (65-70 mph).

Today, the noise has been noticed a lot, especially at low speeds once the accelerator pedal has been let go, where the revs drops.

Before, it would be the odd 'clunk' sound that could be heard but now once the accelerator has been let go I have heard several 'clunks' together which I could not determine if the sound was directly underneath on the passenger side or in the under bonnet area towards the passenger side.

Does the situation outlined sound familiar to anyone or can anyone else help with some advice as to what this may be?

Many thanks,

Mike Noc · 9th September 2014, 21:11

Jack each side up in turn, secure it and then check for play in the wheel top to bottom and side to side. if there is play then look behind the wheel to see where the play is.

You can do the same with the droplinks - try lifting them up and pushing them down with a crowbar

Sector-9 · 9th September 2014, 21:28

If it happens when lifting off the throttle and car in gear then check the rear engine mounting for play.

9th September 2014, 20:01	#1
0375cdt Newbie Rover 75 CDT Join Date: Jun 2012 Location: Kent Posts: 23 Thanks: 0 Thanked 0 Times in 0 Posts	knocking noises Hello all, This query may have been asked before but I can not really find an answer when searching. I have noticed over the last few months a knocking noise under the car, seems more on the passenger side, which today has got worse. I originally thought I had left my garden fork in the boot and it was knocking about. This was not it as it was empty and I will hear this noise mostly over bumps (normal town driving speeds 20-30 mph) or if the road is rough. Never at motorway speeds (65-70 mph). Today, the noise has been noticed a lot, especially at low speeds once the accelerator pedal has been let go, where the revs drops. Before, it would be the odd 'clunk' sound that could be heard but now once the accelerator has been let go I have heard several 'clunks' together which I could not determine if the sound was directly underneath on the passenger side or in the under bonnet area towards the passenger side. Does the situation outlined sound familiar to anyone or can anyone else help with some advice as to what this may be? Many thanks,

9th September 2014, 21:11	#2
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,569 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Jack each side up in turn, secure it and then check for play in the wheel top to bottom and side to side. if there is play then look behind the wheel to see where the play is. You can do the same with the droplinks - try lifting them up and pushing them down with a crowbar

9th September 2014, 21:28	#3
Sector-9 Gets stuck in Rover 75 CDT manual Tourer Join Date: Aug 2014 Location: nr. Mansfield Posts: 767 Thanks: 24 Thanked 182 Times in 137 Posts	If it happens when lifting off the throttle and car in gear then check the rear engine mounting for play.