Labor time for Transmission and Motor Mounts

[Seadweller]

Originally Posted by rick3000

If the vibration is only around the 3000 RPM range you may only need to do the engine mount.

Also, the last two digits in Porsche part numbers are version numbers. The part numbers you mentioned are the same, the part number has just been updated since the Pelican article was written.

Thanks for the confirmation on the part number...The vibration I'm getting is at idle. Oddly enough, there's no rhyme or reason to it. I'll be sitting at a light, and the vibration will start. It's more of a rolling vibration, meaning it comes and goes with a specific rhythm once it starts doing it. The second I accelerate, it's gone.

[Gilles]

Originally Posted by Seadweller

Thanks for the confirmation on the part number...The vibration I'm getting is at idle. Oddly enough, there's no rhyme or reason to it. I'll be sitting at a light, and the vibration will start. It's more of a rolling vibration, meaning it comes and goes with a specific rhythm once it starts doing it. The second I accelerate, it's gone.

Could that be a loose exhaust mounting bracket...?

[Seadweller]

Originally Posted by Gilles

Could that be a loose exhaust mounting bracket...?

It's a pretty substantial vibration, and can be felt through the wheel and seats. I don't detect any mechanical-type noises associated with it. Also, the engine RPM doesn't change as the vibration cycles on and off, so I've ruled out a hunting idle issue.