Rear Creaking & big knocking over bumps

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80s-new-man
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Joined: Tue May 21, 2019 11:21 am
Car(s): Ford Capri 2.9 Cosworth Dec 1984, reg. Feb 1985
Ford Sierra XR4x4 2.9 1992
Jaguar XJR SC 4.0 2001
Location: Suffolk

Rear Creaking & big knocking over bumps

Post by 80s-new-man »

Hi , this has got worse over the last couple of months, it seems there is a creaking sound and quite abrupt “hits” when I go over even small bumps. It feels like the car is hitting bump stops or something.
Could it be very worn out shocks/dampers?

Cheers
Cheers
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Capri 2.9i Special 1984 Cossie 24v BOB heart transplant
Sierra XR4x4 2.9i 1992
Jaguar XJR 4.0 SC 2001
Jaguar F-Type 3.0S sc 380
Allan mcl
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Re: Rear Creaking & big knocking over bumps

Post by Allan mcl »

Have you checked the rear leaf spring shackle bushes for wear, if the ride height is ok it be those or they could be loose.good luck.
Mc Tool
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Re: Rear Creaking & big knocking over bumps

Post by Mc Tool »

Yep , :agree: , sounds like a rubber bush has given up ,possibly a shock mount . Shouldn't be to hard to see, there ain't any hidden bits on Capri back end :D
Sometimes I talk to myself ... and we both have a good laugh
80s-new-man
Posts: 167
Joined: Tue May 21, 2019 11:21 am
Car(s): Ford Capri 2.9 Cosworth Dec 1984, reg. Feb 1985
Ford Sierra XR4x4 2.9 1992
Jaguar XJR SC 4.0 2001
Location: Suffolk

Re: Rear Creaking & big knocking over bumps

Post by 80s-new-man »

Ah I see, thanks for those pointers guys, I’ll try and have a look in those areas 8-)
Cheers
:cheers:
Capri 2.9i Special 1984 Cossie 24v BOB heart transplant
Sierra XR4x4 2.9i 1992
Jaguar XJR 4.0 SC 2001
Jaguar F-Type 3.0S sc 380
Paul G
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Re: Rear Creaking & big knocking over bumps

Post by Paul G »

If the shackles are OK, I'd jack the rear up with the axle hanging and check the springs themselves for any fractures etc. Also give them a good wire brushing and possibly a coat of WD40 just to eliminate "stiction" ie friction causing the leaves to stick to each other when they should be able move as the car goes over bumps etc. This is quite a common cause of creaking with multi-leaf springs.
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D366Y
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Re: Rear Creaking & big knocking over bumps

Post by D366Y »

Spooky, I've just noticed the same issue over the weekend as well - will check the bushes :)
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