1. 5.0foxbody91

    Engine Vibration Above 3000rpm

    Hey guys, I'm new to this forum, I've always loved mustangs, and I finally got one. It's a 91 lx hatch. I've had some trouble with it, but I have most of the problems fixed except for this vibration one. The shifter will vibrate like hell above 3000 rpms, whether I'm sitting still or going down...