I have looked everywhere for someone who has the same issues as mine but have had no luck. The issues are on a 2006 mustang gt, manual transmission and 117k.
The car is lowered on sr springs and struts with a one piece aluminum driveshaft. Just recently I went over a small bump and the car suddenly developed a very strong engine vibration at 3000 plus rpms. It does it in gear, in neutral as well as neutral with the clutch in just revving. Simultaneously the shifter is not hitting on the...

2006 Mustang Gt Vibration at 3000 Rpm