[rbuswell]

I am brand new to the transaxle cars. Finally got my 1987 924S (5-speed) "barn find" running. I am stoked although there are a lot more things to do to the car.

One of the problems is lots of vibration at idle. Above about 1,200 RPM it smooths out somewhat. At about 1,500 PM on up the vibration is gone. I increased the idle to about 950 RPM as recommended on another thread. No change. I suspect it's the notorious 944 motor mounts.

Although I'm not opposed to just replacing them since they are a known problem anyway, I'd prefer to actually know how to make sure they are the problem. Suggestions for steps?

Also, is there a best practice for buying the new mounts. Did Porsche fix the factory parts or is there a high quality aftermarket that is recommended?