Clunking noise at rear!

[bangers]

Hello All

When in a low gear i.e. 2nd and at a low speed, is it normal to hear a clunk if you let the power off without depressing the clutch? The noise comes from the rear of the car.

[trefor]

No. Get it checked, something's loose. for example, the diff bushes and bolts needed redoing on mine a while ago.

[shpub]

No. Either loose diff bolts, cracked diff carrier, knackered prop shaft UJs, knackered CV joint, duff rear wheel bearing, wobbly suspension bush or shock absorber, loose wheel nuts or that bit of wood you didn't notice caught in the suspension bushes...

Also could be play in the diff.

Steve

[spnracing]

My vote would be the rubber bush thing that holds the diff up - is that the diff carrier?

[shpub]

It's close...

Steve

[buzzsaw]

I get a similar noise under these conditions. Mentioned it to David Gerald (where I bought the car) and was told that some clunking is normal from the powertrain as the cars have minimal soundproofing.

[bangers]

Thanks for all the replys, anyone got any coments on what Buzzsaw has to say, clearly that is the answer I most fancy!

[trefor]

I'd get it checked out anyway. Yes, you get drivetrain shunt if you're in too high-a-gear slowing down sometimes, and there is some diff type noise which comes through to the cabin. However, if it's definitely clunking when taking up drive/moving off/coming to a halt then something's loose/worn.

[shpub]

quote:
Thanks for all the replys, anyone got any coments on what Buzzsaw has to say, clearly that is the answer I most fancy!

I tried ignoring this many many years ago in a Vixen until I snapped the drive shaft UJ mount...

If it makes you feel any happier, please feel free to ignore it but the problem is unless someone hears what the clonk is and checked the car over you don't know.

One man's clunk is another's ker-chinnnng
Steve

[BANDIT500]

Banger,

I had this exact problem. It depends what kind of "clunk it is". My problem occurred when i was placing the diff under heavy load in a high gear. When i let off the accelerator i got a clunk and as it slowed more and more, the clunk continued as the car tried to pull itself along.

The reason for this is that the diff's have significant play in them which leads to backlash effect in the diff. This is normal, so long as the noise is not very loud. If this is so, then it's probably a new diff (with mine the bearings had worn and the diff was very loose. A few owners have had this problem, and it's livable with in the short term.

Jack it up and go under to see if the diff is rocking.
Check the bushes are ok first. One of them may be knackered. (and there about £50 each - ouch)

Cheers

Bandit

[dannylt]

It's not the cost of the diff bush that's expensive - it's the 5 hours labour to replace it! I would get it checked sooner rather than later to avoid potentially causing more damage.