Thursday, July 24, 2008 - 05:15 pm, by: Shane Haverkamp(Havabeer)
hi everyone.
i've just done the 100,000k service on my car (timing belt, thermostat, fluids, plugs etc) its a 92 TT auto
my problem is, when i drive it i get a distinct vibration which feels like its coming from the transmission at 4900 - 5000rpm, after that the car doesn't vibrate anymore?
only at that rev range does it happen and it never happened before i swapped everything over. the timing and everything is correct (as far as i can tell)
any idea's of where i should start looking? is there anyway to test the engine mounts, or do i have to pull them out and physically inspect them?
Friday, July 25, 2008 - 08:42 am, by: Matthew Sharpe(Madmatt)
Sounds a bit weird. If you were 10 degrees out on cam timing I'd expect major running problems, not just restricted to a 100rpm range.
Its more likely the shuddering you are feeling is a harmonic resonance. If its not just as simple as a out of balance weel, then possibly its the driveshaft?
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