Urgent! Jeep has horrible vibration, shaking

Tonight I was driving home after a little wheelin', everything was fine until my entire jeep started shaking and vibrating immensely to the point where I had to go about 5mph for it to be some what tolerable. I finally made it home and got under the rig nothing seemed out of place until I moved the rear driveshaft back and forth which moved basically everything under there with it; eg: transfer case etc. Is there something that I might have broken that would cause this? Any help at all would be greatly appreciated, as it's my DD. Thanks

Broken tranny mount. It's between the crossmember and the tranny.

Here is what you need to do.

1. Place block of wood on jack and slightly jack up transmission under the pan
2. Unbolt 4 bolts holding cross member to frame
3. Unbolt 2 bolts near the center of the cross member that keep it attached to the transmission mount
4.Unbolt transmission mount and replace with new
5.On my mount it looked like the bolts were equally spaced and it could go in either way, but they were slightly closer to one side. If you put it in backwards it will pull everything towards the drivers side and mess with your shift linkage.

Also, I would run by a harbor freight and pick up the chisel and punch set. This will make it easy for you to line up the bolts for the cross member to the frame by prying with one of the punches. Good luck.

Thanks guys! Much appreciated. I'll take a look at that. Is there anything else that it might be if not that?

Check your u-joints..Didn't you just put that drive line in?Did you drive it all week before you went out offroading? Was there or is there alot of mud on your rims? (inside). this could throw your balance off big time ..

scottmcneal said:

Check your u-joints..Didn't you just put that drive line in?Did you drive it all week before you went out offroading? Was there or is there alot of mud on your rims? (inside). this could throw your balance off big time ..

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Yes sir, drive line is perfect, drove it all week and it was fine. Not much mud inside the rims but i'll clean em out and see if that helps. Also, replaced the u joints on the drive line you gave me so I'll check the front ones. Thanks Scott

Well I checked it out.. Transmission mounts look horrible. The bottom rubber is cracked throughout and compressed all the way down. Also, Front U-joints need replacing. Ah, jeeps..

If the vibrations continue check your wheel balance.

Anyone know of a good place to get some good transmission mounts?

Also, does anyone know where I can find the heavy duty GMB u-joints?

So i'm just getting around to replacing the tranny mount and I'm having some trouble with it. I started taking the bolts holding the crossmember to the frame and could only get the right side off. The left bolts are spinning but not coming off. Any one know of why it's doing this?. Any help at all would be great. Thanks!

I beleive there is a nut welded into the frame. It must have broke loose and is spinning. Do you have an angle grinder. If not, go to harbor freight and get one for $19.99. Cut the head of the bolt off using a cut off wheel and then push it up into the frame rail. You can either just leave it or try to get it out later. Then you will need to have a new nut welded into the hole. This is what can make a transfer case drop a pain sometimes.

Alright, so I finally got the crossmember off.. now I can't seem to figure out how the new mount goes on. The old one looks nothing like the new one that I picked up. The new looks like this:



Am I looking at something wrong? I don't understand. Please help. Thanks

That is the correct one for an AW4. Dont know if the Peugout has a different mount... What trans do you have?

logdog said:

That is the correct one for an AW4. Dont know if the Peugout has a different mount... What trans do you have?

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I'm not even sure what trans I have, how can I tell?.. All I know is I have a 5 spd manual 4x4, hope that helps.

What year is it? If it's a manual it is not an aw4.

logdog said:

What year is it? If it's a manual it is not an aw4.

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It's an '89.

You have the Peugout. I'm not an expert with the 5 speed, so we'll have to wait for ohters to chime in. But I'll bet it takes a different mount.

logdog said:

You have the Peugout. I'm not an expert with the 5 speed, so we'll have to wait for ohters to chime in. But I'll bet it takes a different mount.

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Darn. I'm gonna shoot the guy at the parts store. I need to get this done as it's my DD. Any help at all would be great!

Part No.
2570 Anchor Mount Transaxle Mount: Rear Wheel Drive; Transmission; With With 4 Speed, 5 Speed; 1 Required Per Vehicle Warranty: LTD LIFETIME REPL

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$24.99
you probably received the Anchor part no 2625 which is for the auto and later model manual trans, IIRC.



P.S. it also fits the 4X4, I just copied the wrong picture......