C70 T5 knocking

[T5Sweep]

Morning guys.

I bought my C70 with a knock at the front, it knocks when deselecting a gear and then selecting another. I changed the gearbox torque link underneath for a polyurethane version which I thought was the culprit, but it was not! Sounds gearbox side, is there another mount over there?

Regards,
Ben.

[Stef1967]

Sounds like play in the dual mass flywheel ...

[T5Sweep]

Originally Posted by Stef1967

Sounds like play in the dual mass flywheel ...

Sounds expensive!

[Stef1967]

Hope I'm wrong ...

What about mileage of your car ?

On my V70 2.4 D manual gearbox , I have the same sound ... 150 000 miles ... But the gear change is smooth ...

[T5Sweep]

Only 96k, I'm really hoping it's one of the hydraulic engine mounts at the back, I'll get under it tonight and have a poke around.

[ITSv40]

Is the top engine to bulkhead mount in good condition? Even slight deterioration will cause a knocking sound amplified by the bulkhead. Very easy fix.

[T5Sweep]

Originally Posted by ITSv40

Is the top engine to bulkhead mount in good condition? Even slight deterioration will cause a knocking sound amplified by the bulkhead. Very easy fix.

The large one on top has been replaced with a polyurethane one, is there another bush where it bolts to the bulkhead itself?

[chelle_belle]

Originally Posted by T5Sweep

The large one on top has been replaced with a polyurethane one, is there another bush where it bolts to the bulkhead itself?

Think there is a very small one at the bulkhead, also check wheel-nuts, driveshaft bolt/s and driveshaft c clamp (although thats on the offside).

Craig

[ITSv40]

Originally Posted by T5Sweep

The large one on top has been replaced with a polyurethane one, is there another bush where it bolts to the bulkhead itself?

Yes, there is. Look at the back of the arm that goes towards the bulkhead. A round flat rubber bush in an aluminium surround -horizontal and partly hidden under a lip in the bulkhead. Nowhere near as large as the front bush, but can be prone to failure and very easy to overlook. A three bolt fixing to the bulkhead, will need the plastic trim panel removing to get to all the nuts.

[T5Sweep]

Originally Posted by ITSv40

Yes, there is. Look at the back of the arm that goes towards the bulkhead. A round flat rubber bush in an aluminium surround -horizontal and partly hidden under a lip in the bulkhead. Nowhere near as large as the front bush, but can be prone to failure and very easy to overlook. A three bolt fixing to the bulkhead, will need the plastic trim panel removing to get to all the nuts.

I'll give it a look over, thanks for the help!