Well, i can't recreate the vibration when the car stands still. When i put gear in neutral and the car parked, all rpm's are pretty fine. No vibrations whatsoever. To add a bit of other peoples experience: all 951 owners i spoken to have a vibration at 3000rpm (or around). I also asked my Porsche Dealer, he said that the engine in the 944 is a pretty unstable block and around 3000rpm the engine is very unstable. Porsche tried to correct this with the balanceshaft and it worked out pretty nice, but the system has to be maintainted (don't we all know
) So, i'm still pretty confused of what could ever be the cause of this. I really think it has to be a bearing in the tube, or a problem with my driveshaft... i can't imagine a problem with the engine, as she is working fine at 3000rpm (also under workload).
Haynes Manual, says:
Vibration with manual gearbox
- Rough wheel bearing
- Damaged driveaxle
- Out of round tires
- Tire out of balance
Still, all these problems would only give vibration at one speed, but our problem is in ALL gears...
Anybody... any ideas?