rangerovers.pub
The only place for a coil spring is up Zebedee's arse
Member
Joined:
Posts: 541

Had the p38 out for a long drive today. At one point in roadworks doing about 40mph I noticed a pretty worrying noise.

Sounded like a rubbing or scraping sound from the rear axle or something around there. Most noticeable when holding the throttle at cruise. Full over run or acceleration seemed to make it go away or at least become much less noticeable. At higher speeds I couldn't really hear it any more.

I also have a clonk noise when changing drive direction, eg shifting from reverse to drive, most noticeable at low speeds, which might be related?

Any ideas where I should be looking?

Member
avatar
Joined:
Posts: 6236

Clonk is likely to be wear in a diff unless it is a propshaft UJ on it's way out. In fact a UJ running dry could also give a scraping noise too. They aren't easy to check without disconnecting one end of the propshaft but if you try squirting grease into the nipple and it all squirts out again, that's a sure sign of wear.

Member
Joined:
Posts: 349

check the obvious first brake pads then universals ?

Member
Joined:
Posts: 541

brake pads i thought about at the time, gently touching the brakes didnt seem to alter the noise though, and braking harder it would go away.

I'll need to get underneath and check the propshafts i guess!

Member
Joined:
Posts: 640

i'd go diff... spent ages messing around with mine and that's what it was - but yes, slack in drive train... so UJs also an (easier) option

Member
Joined:
Posts: 541

I've suspected the rear diff for a while, when i got it, it was noisey on overrun at motorway speeds. That noise has either gone away or i've stopped noticing. I also changed the oil at one point and it was properly black and burnt looking, whereas the oil in the front diff looked nice and clean.

Still, investigation required. In particular the propshafts as if those fail it could get messy!