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Omega General Help / Re: Decceleration vibration (unbalanced propshaft?)
« on: 06 October 2010, 19:09:35 »
Thanks guys, I'll try your suggestions!
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Omega General Help / Decceleration vibration (unbalanced propshaft?)
« on: 24 September 2010, 19:19:01 »
Hi People
I have raised this subject before (a few months ago), and I did get a few replies, thankyou very much, however ive still not got to the bottom of my problem.
Ive got an 04 2.2GLS, everything seems fine with the car apart from a mysterious rumble. Its probably best if i list the points about the rumble:
- The rumble sounds like a "transmission tunnel" rumble
- It can be felt through the front seats at certain speeds
- The rumble is only when deccelerating
- Being in or out of gear makes no difference
- Clutch in or out of gear makes no difference
- The rumble is deccelerating between 55-40mph
I have had the car for four months and done 3000 miles in it, im not sure if it is getting worse or not (these things are tricky to judge), although im beginning to wonder if a slight vibration can be felt when the car is on a bumpy road and "on the rise" (sitting low on the suspension in a dip).
I have taken the car to a friendly independant local garage and they cant find a problem, but im sure GM wouldnt have made a car with that noise. Ive got my first child on the way (due in December) and the car needs to be a reliable family runaround. I would be really grateful if anybody can suggest a checklist of things I can take to the garage and ask them to check. From basic logic I think it may be an unbalanced propshaft, is this usual?, has anyone else had a rumble on a petrol 2.2GLS saloon?.
Thanks for any help people, both me and my little boy (as of December) would be really grateful
I have raised this subject before (a few months ago), and I did get a few replies, thankyou very much, however ive still not got to the bottom of my problem.
Ive got an 04 2.2GLS, everything seems fine with the car apart from a mysterious rumble. Its probably best if i list the points about the rumble:
- The rumble sounds like a "transmission tunnel" rumble
- It can be felt through the front seats at certain speeds
- The rumble is only when deccelerating
- Being in or out of gear makes no difference
- Clutch in or out of gear makes no difference
- The rumble is deccelerating between 55-40mph
I have had the car for four months and done 3000 miles in it, im not sure if it is getting worse or not (these things are tricky to judge), although im beginning to wonder if a slight vibration can be felt when the car is on a bumpy road and "on the rise" (sitting low on the suspension in a dip).
I have taken the car to a friendly independant local garage and they cant find a problem, but im sure GM wouldnt have made a car with that noise. Ive got my first child on the way (due in December) and the car needs to be a reliable family runaround. I would be really grateful if anybody can suggest a checklist of things I can take to the garage and ask them to check. From basic logic I think it may be an unbalanced propshaft, is this usual?, has anyone else had a rumble on a petrol 2.2GLS saloon?.
Thanks for any help people, both me and my little boy (as of December) would be really grateful
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Omega General Help / Re: Left hand tracking drift and Decceleration rumble
« on: 14 May 2010, 20:46:32 »
Thanks people.
The tyres are Pirelli P6000 all round but only have a few thousand left in them. The wear is even on all 4 and nothing seems out of the ordinary. I'm in Ely in Cambs, there's a Vauxhall dealer nearby, apart from the obvious they should be able to rectify any tracking issue shouldn't they?. I'm not sure if I'm just being picky, it's a clean car, even with genuine GM exhaust.
Anyone got any thoughts on the rumble?, I can only think it's a resonance (harmonic) on the prop shaft at a certain speed when not under load. :-?
The tyres are Pirelli P6000 all round but only have a few thousand left in them. The wear is even on all 4 and nothing seems out of the ordinary. I'm in Ely in Cambs, there's a Vauxhall dealer nearby, apart from the obvious they should be able to rectify any tracking issue shouldn't they?. I'm not sure if I'm just being picky, it's a clean car, even with genuine GM exhaust.
Anyone got any thoughts on the rumble?, I can only think it's a resonance (harmonic) on the prop shaft at a certain speed when not under load. :-?
4
Omega General Help / Left hand tracking drift and Decceleration rumble
« on: 14 May 2010, 17:33:29 »
Hello everyone.
I have recently purchased an 04 plate Omega 2.2GLS, manual, 49,000 on the clock, 1 owners and full service history.
The car was recently serviced, but I put it into ATS to get the wheels balanced and tracking done. All four wheels were balanced and front and rear tracking done. However, the car still pulls slightly to the left, im aware of how camber affects it etc, but ATS stated they couldnt get it to run completely straight. It is only a slight drift to the LHS, but a definite and consistent thing.
Also, the car has a rumble when deccelerating (not breaking) down from 50mph to 40mph. It is a low throaty rumble, nothing that sounds "broken or wrong", more like an unbalanced sound. It does this with the clutch in or out, braking or not breaking. The only thought I have had are an unbalanced prop.
I have taken it to a local mechanic I trust and they have done the following:
1) swapped wheels front to back and side to side - no effect on either problem
2) checked all wheel bearings - no effect on either problem
3) checked for warped disks etc - no effect on either problem
4) checked all is as it should be and the car has been in a smash
5) checked the prop shaft couplings etc - no problem
The only thing we can think is an unbalanced prop, or dodgy centre bearing (although on inspection it seems fine).
Can anybody offer advice on either the tracking or vibration issue?.
Thanks
Rich
I have recently purchased an 04 plate Omega 2.2GLS, manual, 49,000 on the clock, 1 owners and full service history.
The car was recently serviced, but I put it into ATS to get the wheels balanced and tracking done. All four wheels were balanced and front and rear tracking done. However, the car still pulls slightly to the left, im aware of how camber affects it etc, but ATS stated they couldnt get it to run completely straight. It is only a slight drift to the LHS, but a definite and consistent thing.
Also, the car has a rumble when deccelerating (not breaking) down from 50mph to 40mph. It is a low throaty rumble, nothing that sounds "broken or wrong", more like an unbalanced sound. It does this with the clutch in or out, braking or not breaking. The only thought I have had are an unbalanced prop.
I have taken it to a local mechanic I trust and they have done the following:
1) swapped wheels front to back and side to side - no effect on either problem
2) checked all wheel bearings - no effect on either problem
3) checked for warped disks etc - no effect on either problem
4) checked all is as it should be and the car has been in a smash
5) checked the prop shaft couplings etc - no problem
The only thing we can think is an unbalanced prop, or dodgy centre bearing (although on inspection it seems fine).
Can anybody offer advice on either the tracking or vibration issue?.
Thanks
Rich
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