Re: unknown vibration
i had this same problem in my 4.1EFI XF. as soon as you got to 2400rpm and above i got a HUGE vibration through the car which i thought might have been caused by uni's or engine mounts...turns out the main & big end bearings where completely stuffed! i have just replaced them and putting the engine in tonight so i should know later in the week how it goes.
does it knock on start up?
- BLO GMH
-> 1987 XF Fairmont Ghia - Silver, 4.1 EFI, T5, LPG, Clive Cam, Megatork Valve Springs, Crow Pushrods, Crow Timing Gears, Pacemaker Headers, Hi Flow Cat, Mandrel Bent Exhaust, ESA Straight Through Muffler, Grey Velour Interior, Full Electrics, Trip Computer, MOMO Race Wheel, King Spring Super Lows, Monroe GT Gas Shocks, Nolathane Bushes, EL XR8 Rear Axle w/ 3.45 LSD, Snowflakes