93 YJ bad vibs at idle, jerking at takeoff?
Alright guys. I'm stumped! I've got a 93 YJ 2.5l that I've had for a little over a year now that I've been doing non stop work on. Its been fun but now I'm getting a little agitated. I need some help.
So a couple of weeks ago I started noticing a vibration between 30-50mph. So I checked the ujoints and the ujoint at the slip yoke was shot. Replaced both of them to find that it made the vibs better but not completely. So next was the trans mount. That was shot, replaced that and that's when the jerking into first gear started. I didn't want to even think about the idea of it being the clutch so I went to the motor mounts next. Turns out the mounting plate on the pass side was ripped off the frame. So I replaced that and both motor mounts. Now it vibrates all the time and jumps letting the clutch out into first. But If I release the clutch slowly at 1500+ it won't jerk.
-new u joints
-new trans mount
-new motor mounts
-trans/tcase/rear diff fluids all good
-no vacuum leaks
I'm thinking the clutch may be warn. Plate glazed. Bearings bad. Something along those lines. But what I can't figure out, is why does it vibrate so bad all the time? Specifically at idle in neutral. Bad flywheel? But it doesn't get better or worse when clutch is engaged.I don't know. Any guidance would be greatly appreciated.