Have someone sit tin the driver's seat and open the hood. Stand next to the vehicle (not in front) and have them put it in gear with their foot on the brake. Then , with their foot still on the brake, have them give it some gas. If the engine jumps, the mounts are probably bad. If it stays nicely in place, look elsewhere.

 

Why don't you just look at the mount itself? If it's cracked and falling apart, get new ones. If you can't see them, there is not really another 100% way to say if they've failed or not.

Lots of guys on the forum recommend Brown Dog mounts as replacements.

 

I may have found where the clunk and vibrating is coming from.

I had a buddy rev the engine in drive while pressing the brake and the engine does lift as it is given gas but it moves smoothly in the mount and seems to be no play in it.

I checked some more and found what is probably causing the clunk when I turn.
Check out the video of the draglink below and let me know if this is too much play. I think it is because I can move it freely enough that the tie rod ends clunk against the spindle and pitman arm. Also when my buddy turned the wheel left to right, I could see the draglink ends moving up and down.

http://s679.photobucket.com/albums/vv154/2287Marco/?action=view&current=HPIM2641.mp4

 

My Jeep is doing the same thing, was this the problem or not.

 

Defiantly worn

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Tom, did you get a chance to replace those items and if so did it stop the cluncking. My jeep is doing the exact same thing and I thought it could be the mounts but they only looked cracked. I was also able to turn the same bar as in your video except that my ball joints dont move as much as yours.

 

By the way, nice looking Jeep.

Harold.

 

I replaced all 4 tie road ends as mine where like the ones in video probably a little worse. I had play in steering and vehicle drifting with the road camber and constantly correcting the steering wheel but there was no noise.

The bar you see in video moving very easily settles at lowest point and doesn't interfere with wheel knuckle or pithman arm. It's a indication the ball joints (tie rod ends) are worn and will need to be replaced in near future.

Edit
Have you play in steering wheel ?


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I do have play in the steering and I also have a clunking noise when I turn the steering wheel and give the Jeep a little gas.

 

Hey Marco, not sure if you will see this or not. Did you ever figure out what was causing the rattling? I have a jeep WJ that I know for sure has bad motor mounts (theyre ripped) and I have a rattling coming from under the jeep and cannot for the life of me figure out whats causing it.

 

Hey Marco, not sure if you will see this or not. Did you ever figure out what was causing the rattling? I have a jeep WJ that I know for sure has bad motor mounts (theyre ripped) and I have a rattling coming from under the jeep and cannot for the life of me figure out whats causing it.

If your motor mounts have gone bad, there is a fair chance that your transmission mount is bad too. You'll have to drop your tcase skid if you can't peek up in there. They're pretty cheap. Might even make it easier to change the motor mounts if the tcase skid is off- it'll let your motor move around better.