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Model specific boards => Golf mk2 => Topic started by: mpgscott on 27 October 2003, 19:31

Title: 91 gti 8v Annoying rear knocking noise
Post by: mpgscott on 27 October 2003, 19:31

Can anyone help me cure a very annoying knocking noise coming from the rear end of my 91 8v gti golf.
I have had the car up on a set of ramps which allowed the wheels to hang freely and cannot see any fault with the suspension units, these dont look too old.
Is the problem likely to be the axle mounts, because looking at them they seem ok but how could i tell.
Is there any way of being able to find out.
The car still feels ok on the road.

Any help much Appretiated.  Thanks  ???  

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: Blue MK2 on 27 October 2003, 20:51

Might be your exhaust hitting the under side of your car?

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: mpgscott on 27 October 2003, 21:15

Thanks,

Checked this out and found the heat sheild to be loose so sorted this.

Problem lies with the rear drivers side suspension.  When you drive along you can feel the shocker move at the same time as the knocking noise appears, so I am wandering if there is some part missing off my suspension set up at the rear.

The car has been lowered do they sometimes remove other parts to make the car look even lower than the 35mm drop?

If so what part is it?

Again thanks for any help.

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: golfvr6 on 27 October 2003, 23:56

Is the spring seated correctly?

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: Gambit on 28 October 2003, 09:15

have you checked the rear axle bush? when i first got mine it had a knock on it, i thought it was a soft shock at first but found out it was rear axle bush

simple way to test, with the car stationary on the ground, try and move the wheel back and forth, if there is play in it then it'll be the bush

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: golfvr6 on 28 October 2003, 09:59

Look and see if the bushes are cracking up.

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: Blue MK2 on 28 October 2003, 10:50

I herd the rear axle bushes a pain in the neck to replace?

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: golfvr6 on 28 October 2003, 10:58

Yep, need to remove the rear axle, the old bushes needed to be pressed out, and new ones pressed in. They are very tightly pushed in so you will probably need a hydraulic press.

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: GTI16vGaz on 28 October 2003, 16:54

I do really think it will be the bump stops, i had the samer problem it took half n hour to do both on the back.

The rubber in between the damper and the spring had roted away and this was causing the banging in the back.

change them and that will sort your problem.

 ;)

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: golfvr6 on 28 October 2003, 17:32

The bump stops always seem to break on the backs, as along as they still on there they will usually work. Worth a look.

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: Blue MK2 on 28 October 2003, 20:26

So any garage should be able to change these rear axel bushes?

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: golfvr6 on 28 October 2003, 20:29

Yep should be able to.

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: mpgscott on 29 October 2003, 19:39

Thanks for the response.

Which part is the bump stop that is being talked about? is this the rubber bush at the top of the shocker assembly.

I think i need to remove the shocker to have a look.

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: filthy on 10 December 2003, 00:00

When I changed my shocks, I overtightened the nut that holds the upper spring cup on, which crushed the tiny circlip that sits in the groove on the rod.This meant that the shock wasn't moving when the spring compressed, and it was knocking like a bastard- took me ages to work out what it was!

Title: Re:91 gti 8v Annoying rear knocking noise
Post by: golfvr6 on 10 December 2003, 14:30

The bump stop sits on the shock absorber rod, its easy to check with it still on the car.