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[Tonka.]

Posted earlier about an odd noise from the rear. From my initial post I led people on OOF to point towards a wheel bearing fault. It seems this is not the case............

Just to recap, the rumbling grating only appears when turning left at slow speeds with the engine under load (i.e. not coasting).
During high speed left hand cornering and in a straight line the noise is not present.
It can make the noise when sat stationary in 'D' and I blip the throttle.
It also seems to come more from the centre/rear of the car. Sound does travel I know.

I have had the wheels laser aligned and balanced to put them out of the equation.

I am having trouble remembering when I first heard this noise but, to list what I have done may help.

I have replaced the rear springs which of course involved dropping the rear diff etc
I have replaced the gearbox which involved removing the cat sections
The gearbox has fresh Dex III in and the diff has fresh EP 90 in it.

I am quite confident though that it was fine before I changed the box and the springs. But it may have been there before and i just didn't notice.

I have now had it though three garages including Vx   and they all give me different opinions leaving me rather confused  

If any one has come across this before could you point me in the right direction.  

Thanks in advance guys and gals  

[Mike Collins]

If it makes the noise when stationary, I would check the auxiliary and cam belt idler bearings very carefully before running it any more.

[mantahatch]

Mine makes a small whining noise when stationery sometimes, it is the exhaust heat shrouds.

May help a bit.

Mike

[Tonka.]

If it makes the noise when stationary, I would check the auxiliary and cam belt idler bearings very carefully before running it any more.

The noise is present when driven around left hand corners and comes from the rear of the car  

When idling it purrs like a kitten a V6 one at that  

[Tonka.]

Mine makes a small whining noise when stationery sometimes, it is the exhaust heat shrouds.

May help a bit.

Mike

Doesn't make any untoward noises when stationary   Only when going around slow left handers  

[ians]

Could be the back box/heatshield coming into contact when under cornering load?   Worth giving the tail pipe a waggle by hand..

[Tonka.]

Could be the back box/heatshield coming into contact when under cornering load?   Worth giving the tail pipe a waggle by hand..

Wedged the exhaust with bits of rubber   Still does it  

If I can get to the bottom of this I will have a fantastic car  

[Tonka.]

I know bumping is against the rules but I really need help here.  

I there are any more thoughts, please let me know.

Got our holiday coming up soon and I don't know if she will get us there  

[pscocoa]

I had droning noise on Signum cured when tyres changed as it is a known issue on Vectra/Signum. Is there a chance that there is a defect in one of tyres on cornering? When were tyres last inspected?

[Tonka.]

I had droning noise on Signum cured when tyres changed as it is a known issue on Vectra/Signum. Is there a chance that there is a defect in one of tyres on cornering? When were tyres last inspected?

Tyres inspected yesterday, rebalanced, laser aligned and rotated. Pirelli P6000. All good  

[pscocoa]

no problems on edges of tyres? Rears are difficult to check when on car. Can you swap wheels over?

[Tonka.]

no problems on edges of tyres? Rears are difficult to check when on car. Can you swap wheels over?

Tyres rotated and still the same.  

[pscocoa]

When were brakes and handbrake shoes checked. I had an issue once with the handbrake shoes which created a noise but not the one you seem to be getting - but if cornering at speed it is not there I suppose some sort of binding on might be an answer.

[Tonka.]

When were brakes and handbrake shoes checked. I had an issue once with the handbrake shoes which created a noise but not the one you seem to be getting - but if cornering at speed it is not there I suppose some sort of binding on might be an answer.

That's a good point. I serviced the handbrake mechanism last weekend as per the OOF guide.
Now the handbrake works well but the noise was there before this.

However, the offside rear disk was a little pitted and both rear callipers are rusty.
When braking there is no noise. It is only when cornering left  

[Grumpy]

Posted earlier about an odd noise from the rear. From my initial post I led people on OOF to point towards a wheel bearing fault. It seems this is not the case............

Just to recap, the rumbling grating only appears when turning left at slow speeds with the engine under load (i.e. not coasting).
During high speed left hand cornering and in a straight line the noise is not present.
It can make the noise when sat stationary in 'D' and I blip the throttle.
It also seems to come more from the centre/rear of the car. Sound does travel I know.

I have had the wheels laser aligned and balanced to put them out of the equation.

I am having trouble remembering when I first heard this noise but, to list what I have done may help.

I have replaced the rear springs which of course involved dropping the rear diff etc
I have replaced the gearbox which involved removing the cat sections
The gearbox has fresh Dex III in and the diff has fresh EP 90 in it.

I am quite confident though that it was fine before I changed the box and the springs. But it may have been there before and i just didn't notice.

I have now had it though three garages including Vx   and they all give me different opinions leaving me rather confused  

If any one has come across this before could you point me in the right direction.  

Thanks in advance guys and gals  

Check your Engine and Gearbox mounts for condition and security.
I had the same problem on my old Merc 190 and found that one of
mounting bolts had worked loose. This allowed the engine and
drivetrain to wind-up and twist out of line in reaction to the torque
delivered by the engine and grind and vibrate against the chassis.
On mine it happened when taking right hand bends under load
and rattled when blipping the throttle violently when stationary.

I alos had the same thing on a Singer Vogue (that takes me back
a bit) when one engine mount disbonded and caused light tramping
on the rear axle.

Just a few thoughts as you seem to have already checked the obvious