In article . com>,
"Vin" > wrote:

> I have a Grand Cherokee (1994) with 70K on it. It's one of the last
> stick shift Grand Cherokees made, and I've owned it since it was new.
> I've developed a shimmy in the drive train that feels like the engine
> and transmission want to fall out of the vehicle. It's so bad that
> I've had to pull over to the side of the highway in stop-and-go uphill
> situations and wait for the traffic to clear. Before you suggest the
> obvious, here's what I've done: new clutch (including pressure plate
> and flywheel), new shocks all around, had the motor and trans mounts
> checked - twice, plus the universals, and the brakes are new. The
> brakes are not the problem because the vehicle rolls easily on even a
> slight grade. Here's the last bit of the puzzle: when cold, it acts
> perfectly OK: no shake at all. When I've been on the highway for a few
> miles and then try to start up a hill (even a small one, like my
> driveway), then the problem shows up. The car doesn't want to move and
> the whole underside of the motor/trans shakes like crazy. When I'm
> having this problem, I can hold the car with the emergency brake and
> try the clutch - no shake at all. I've taken it to various shops and
> no one can figure it out. Any ideas out there??

Don't fully follow the problem from the description... but for some
reason I bet it turns out to be a busted motor mount/s problem after all.

Will it 'do it' at low enough speeds where you could (very carefully,
safe and legally) drive it with the hood open, and watch and see if the
engine is dancing around?

Also, stopped with the hood open, put it in 1st, give it just a little
gas, and gently 'slip' the clutch for a second while holding the brake.
Watch the engine, it should move, but only just a little. (Compare to
another car without the prob). Repeat the same test in reverse too.

Good Luck! Let us know what you find...

Erik