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Metallic pinking sound when pulling away.


New member
9 Jun 2013
Hi all,

Pretty new to the Porsche scene and having had great fun in my 996C4S I now have her sitting in a garage too scared to drive her.
When moving off from stand still I get a loud metallic pinking noise from under the car, which sounds like metal stressing (can't think of any other way to describe it) once on the move I don't hear it again until I slow down under breaking. I then get it again when I accelerate. The car drives fine and I thought it would be an exhaust mount or similar. My local indy has had a look and can find nothing, although has heard the noise and is baffled :?: Having listened to it from under the car on a ramp he is convinced it is coming from the auto gearbox. I have taken the car to an auto specialist who is not convinced it is coming from the gearbox but also cannot find what is causing it. The doughnut on the prop shaft was slightly warn, so that has been changed already with no joy.
They are going to try for the second time, putting the car over a pit and driving it to try and locate the source of the noise.
The offside rear diff seemed to a have a little more play than the near side. could this cause the noise?
Any ideas before they start dismantling the gear box. I can see the cost spiralling with no real idea what to tackle first. :mechanic: :whiteflag:
Thanks in advance for any help.
Try tightening the cross-member just by the front of the rear wheels. :wink:
I cannot help on this one, but


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