I have a 1995 Grand Cherokee that vibrates badly when stopped with the motor running and in gear. I replaced the distributor cap (coil post covered in a white powder and contact poles worn) the rotor and the pickup coil plate. Runs better but still vibrates. Thanks for any help.

 

i have the same problem... i'm blaming the harmonic balancer but it doesn't look bad. mine vibrates at a stop in gear as well as between 1500-2000 rpm while i'm driving no matter what gear im in.

any other ideas would be great.

94 zj 4.0 2wd

 

Does it idle too high? My '93 idles at 750 in gear or not. The whole Jeep shakes and rattles when I stop in gear, but if I put it in neutral, the engine runs as smooth as silk. I've been suspecting that it has something to do with the transmission maybe. It's been a couple years since I changed the fluid.

 

Have youchecked motor mounts, ??? Mine were causing a bad vibration which was worst at idle.. Didn't look bad until I took them out then they fell apart. I have 200.000 on mine but I supect they have been bad for a long time..

 

+1 for the motor mounts. If they go bad they will cause shaking and even clanking noise if they are that far gone. I don't remember how many there are but If there are 4 the the most likely ones to go bad are the front one. But I would give them all a once over.

 

There are Three one on each side of the motor and another at the transmission.. that one usually is not a problem unless you've liifted the jeep.

 

I have a 1995 jeep Cherokee XJ that I just put a new head gasket and rebuilt the head at a shop along with new spark plugs, and cap and rotor, it also as a new throttle position sensor. now after putting it all make together the motor shakes in gear more and a little in park but seems like it want to bog down and shut off but anyways I notice a light smoke coming out of the oil dipstick do know what's that about . but you have to push the gas way down for it even to get going, I checked vacuum lines and can't hear any hissing noise also along with checking the exhaust manifold. please help I'm so lost on what to do now.

 

I have a 96 ZJ and it vibrates at idle and seems like it's jut misfiring but I pulled each plug wire and it didn't change anything I'm not sure what to do next.