When i reach speed of 40-50mph my 1996 jeep grand cherokee starts shaking really bad. its definetly a engine thing not an alinment problem

it is stablize bar or steering box Heavy Duty Jeep Steering Stabilizer

Have a shop look at it. It sounds like lower ball joints, but it needs to be visually inspected.

It could be one of the following:

Bad ball joints
Tires are really out of balance. This happens usually during a certain speed.
A worn out u joint.


For instructions, I will have to know if the jeep is a 2 or 4 wheel drive. Get back to me on this. Thanks

Might be your jeep's ecu is bad. Does the check engine light come on your dash, when you turn the ignition key to on, before cranking? If not, the ecu is bad. If the check engine light does come on, it may be the crank sensor is bad on your jeep.

have the struts checked

sounds fuel related if you have not changed the fuel filter do this first,then check to fuel pump and pressure at fuel rail.and air cleaner also

That and other bushings and idler arms worn. I would suggest a free inspection somewhere for them to show you what needs repaired.

1996 ,wow its classic its over 10yrs of age ,,,,,,renew it sounds like engine is finished

Any all wheel drive will give less fuel miles.(compared to ones you engage as needed) The Chrysler v8 is a time proven engine, pretty much a copycat of a chevy with some changes to make it their own. Overall, I haven't heard any really bad stuff about them. If you look at the problems on this site, there seem to be fewer jeep probs than all other vehicles. (even though some problems are really weird!!!)
What you really need to see is the vehicles history to make sure it's been maintained and has not been back to a shop for the same thing over and over.
Good luck!

go to qudratec
they should have bypass ecm to plug in it solve that pesky light.
please rate thanks.