Thumping noise while driving
Thumping noise while driving
Author
Discussion

Rot box

Original Poster:

36 posts

190 months

Thursday 19th June 2014
quotequote all
Hoping someone with more experience might have some ideas,I bought ford capri 2.0 laser a while back and since that day it's had what i can best describe as a constant thump while driving, but only under load it stops on overrun and starts again when i apply the throttle.

It sounds like it's coming from the back end, the prop is off and their is a tiny amount of play in the uvj where it meets the diff, other joints seem fine in comparison. The rubber mounting was the 1st thing i replaced it's made no difference, the centre bearing seemed fine too.

I was thinking diff, and their did seem to be a clunk/vibration when i turned the prop by hand before i removed it but i don't know much about diff's tbh and everything i've read suggests that diffs whine and howl when worn as oppose to knock and clunk, or certainly wouldn't have the driven few hundred miles it's done if it were that bad.

So, could this fraction of play in the uj be the cause, a knackered bearing in the diff, or could this maybe actually be a gearbox fault??

Cars up on stands while i have a poke about, and debate taking the back axle off.

Any suggestions or advice would be greatly appreciated, cheers.


trashbat

6,305 posts

182 months

Thursday 19th June 2014
quotequote all
Is there anyone in the boot?

BritishRacinGrin

26,498 posts

189 months

Thursday 19th June 2014
quotequote all
I think you're looking in the right places. Worn engine, gearbox and diff mounts can allow these assemblie to 'wind up' under power which can bring your propshaft within striking range of the transmission tunnel. Check also your guibo / drive dougnut, drive shafts and subframe mounts. Also don't discount tyres, they can be responsible for all manner of odd noises due to internal defects.

Bill

58,630 posts

284 months

Thursday 19th June 2014
quotequote all
trashbat said:
Is there anyone in the boot?
nono There's no room because of the enormous sub.

PHmember

2,487 posts

200 months

Thursday 19th June 2014
quotequote all
Bill said:
nono There's no room because of the enormous sub.
Greedy...

Rich1973

1,278 posts

206 months

Thursday 19th June 2014
quotequote all
You definately need to check the boot for a lady of ill repute
That or the rear shocks possibly

Buff Mchugelarge

3,316 posts

179 months

Thursday 19th June 2014
quotequote all
trashbat said:
Is there anyone in the boot?
Nearly soaked my keyboard in pear cider then! laugh