mchristyuk
Junior Member
- Messages
- 668
I've noticed quite a loud driveline shunt type noise coming from my car and was looking for peoples thoughts?
Car is a 4200 CambioCorsa and produces a significant clunk from the rear when going on/off throttle below about 25mph. It doesn't happen every time, but most times.
There is no noise noticeable above 25/30mph and there's no vibration and gear changes are fine whether banging through at the redline or slowly changing at more moderate speeds. Bouncing the car up and down or driving over bumps makes no noise... so suspension it is not. I've also checked all the brakes and they are fine.
I jacked the car up at the rear at the weekend and turning either rear wheel produced a clunk from the diff.. but then I'd kind of expect that.
I've read that these cars can suffer from driveline shunt at slow speeds, but this is much louder than I'd really expect.
So as far as I can see it's one of the following:
1) Perfectly normal.. buy a louder exhaust.
2) Shaft going from diff to wheel playing up
3) Main prop shaft to diff, either joints or loose bolts
4) Knackered diff
On my 3200 the main prop shaft was easily visible and it was quick to check that the mounting bolts were tight between shaft and diff (and in my case they weren't). The 4200 seems to run the propshaft in an outer tube.. a) Are there any bolts to check and b) How do you get to them inside the torque tube if there are?
Cheers!
Mark
Car is a 4200 CambioCorsa and produces a significant clunk from the rear when going on/off throttle below about 25mph. It doesn't happen every time, but most times.
There is no noise noticeable above 25/30mph and there's no vibration and gear changes are fine whether banging through at the redline or slowly changing at more moderate speeds. Bouncing the car up and down or driving over bumps makes no noise... so suspension it is not. I've also checked all the brakes and they are fine.
I jacked the car up at the rear at the weekend and turning either rear wheel produced a clunk from the diff.. but then I'd kind of expect that.
I've read that these cars can suffer from driveline shunt at slow speeds, but this is much louder than I'd really expect.
So as far as I can see it's one of the following:
1) Perfectly normal.. buy a louder exhaust.
2) Shaft going from diff to wheel playing up
3) Main prop shaft to diff, either joints or loose bolts
4) Knackered diff
On my 3200 the main prop shaft was easily visible and it was quick to check that the mounting bolts were tight between shaft and diff (and in my case they weren't). The 4200 seems to run the propshaft in an outer tube.. a) Are there any bolts to check and b) How do you get to them inside the torque tube if there are?
Cheers!
Mark