[jonnyf90]

Hi All

After a winter of hibernation, my 960 is back on the road after replacing the front control arms and ball joints, a new set of boots on 17" alloys and a mini-service and all is good.

However, it's developed a weird idling problem in the last week.
When idling, the car is shaking slightly, almost as if there's a misfire and looking under the bonnet, the engine is oscillating.

However, under normal driving, it runs perfectly fine and is smooth, although seems slightly down on power.

Anyone have any ideas?
Rooting around previous threads, a vacuum leak might be the culprit, however my OBD-II readout shows vacuum as normal (20 inHg idle, 26inHg off throttle and moving).

When I had the clutch changed last year, my mechanic informed me the flywheel (dual mass!) was slightly scored, but it should be ok. Would this affect the idle so much to cause vibrations?

Cheers