hi i am new to this forum and need some help. I have a 1991 jeep Wrangler 4.0. I put a 2.5 inch lift on it rough country and now it shakes. the lift has been on for a while now as has the shacke lift. i retorqed everything and it still shakes. i have tried different tires, took front drive shaft off and rear and still shakes. put new rear wheel bearings in new transmission mount and torqe bushing. All universals are brand new new ball jounts everything is tight i dont have the track bars on front or rear but did it before i took them off. any advice i am at a loss thanks
At what speed does it start shaking? Are all your wheels balanced? Any play in the steering shaft, tie rods, or ball joints? How much lift do you have altogether? Could also be that you need to drop the transfer case an inch to correct the angle on the driveshaft.
all together i have about 3 inches and i ahve tried the tranny drop by one washer at a time up to an inch and still did nothing and i put my buddies tires on from his jeep and still did it everything is tight that i can tell no play in anything and kinda does it the worst between 30 and 40 mph but does it pretty much all the time as soon as i push the clutch in it stops
Even when rolling at that speed when you depress the clutch it stops? Sounds to me your problem still lies somewhere in the rear driveshaft/transfercase. How are the ujoints on the shaft? Is the shaft balanced? How much of an angle is the shaft to the differential?
ya got all the bolts to it and it still shakes when i take off the rear drive shaft and all universals in the jeep are brand new i have double and tripple checked them the whole jeep shakes it shakes the dash and everything i kinda thing it is in the tranny but not sure tired of putting money into it to try things.and yes it does stop when the clutch in pushed in the only thing when i have the clutch in and i am just drifting and i go to put it in a lower gear you can feel it shake but once its in the gear completely it wont do it if i just bounce the shifter into a lower gear it will shake if you understand what i am trying to say
did you lower the transfer case to? or is it in the stock position still? Also, check your U-joints at the front wheels. Not the drive shaft ones for front or back but the ones right at the back of the wheel.
yes they are new too every u joint in this jeep is brand new the ones on the axles and the driveshafts. and yes i have one washer at a time up to one inch and did nothing to help a 2.5 inch lift should not require one too tho and right now it is back to frame no spacer in it now
Almost sounds like you broke the shaft in the tranny... only other thing I could think of would be a busted flywheel or you need the SYE kit and a cv stile driveline. But for it to stop when you disengage the clutch sounds like its gotta be in the clutch area.
:Theory of a dog:
If you can't eat it or screw It, piss on it and walk away!
did you try to move your tires around to be sure its not a tire issue? Just to eliminate 'em from the equasion. My wifes 4x4 ranger had a similar problem and I thought that becuase the tires where only a year old that they were fine. But, the allignment had been off and it chopped one tire (wore it at an angle across the tread) and that one tire caused a horrible shake. Just wanted to mention it just incase...
I was thinking to, you did the right thing by eliminating the engine. If you disengage the clutch and the shake stops, its inbetween the tranny and the tires somewhere. Have you tried 4h -vs- 2h? If it only does it in 4 then its in the front somewhere. If it does it in 2wd and 4wd its somewhere in your trans or transfer case or rear end.
have swapped tires from another jeep no change took one driveshaft off at a time still no change its not the tires shakes the same when am letting the gearing hold me back going down a hill but once again when i push the clutch in it is smooth i am beginng to agree its in my clutch or tranny i dont think it is in transfercase but i could be wrong and i just want to ride the dam thing since its getting nice out now