My wifes 87 Diesel when you come to a stop at a light shakes pretty good, however while it's doing it if you put it in Neutral or Drive, it stops. I've got 2 threories, either the motor mounts are shot (liquid filled correct?) or I've got maybe a plugged injector or some sort of injector problem? She uses REDLINE 85 plus religiously. I just would like to narrow down my problem before I talk to my local shop so I can be prepared.

Any input would be really great and appreciated. Thanks in advance!

Jason

The engine mounts will cause this. Also, be sure that the overvoltage relay is good. It will cause the engine to be in limp mode and run poorly.

I didnt know a 87 diesel has a limp home mode. Is it like this when starting and shutting off the car too? if so, motor mounts. sometimes tranny mount causes abnormal vibrations too