When i accelerate i get a vibration. Pretty sure i have a bad motor mount. Could that be the cause? Or could it be a u joint going out maybe? Any advice would be appreciated.

 

what are the specs of the jeep, lift, tire size, sye? where do the vibrations feel like they are coming from

 

Totally stock 95 sport. 8.25 Chrysler, np231, 4.0 just getting ready to order the lift and i started getting vibration. Only on acceleration. Stops when i level off the accelerator. Also, if it helps, i down shifted through the gears an got no vibration.

 

I forgot. This thing does have a set of spring stiffeners on the back leafs. They have never caused a problem before though.

 

Check u-joints, motor mounts could be an issue as well but it would be a clunking and not really a vibration.

 

When was the last time you did a tune up, plugs, wires etc

 

How tall do you plan on lifting? If you're not going over 3 inches, I'd suggest replacing all your ujoints.

Probably time for new motor mounts AND transmission mount (do them at the same time)

 

im having the same problem (01 xj 3" RC, no sye, 31x10.5 bfg ko)...i just replaced all hubs and u joints in the front and had the front driveshaft checked all was well....i replaced fluid in transfer case helped a lil bit but still getting vibration when accelerating...

 

Did you check the ujoints? Seems most likely unless something isn't tight that should be

 

You might need to do a tcase drop or a sye for yours. Some people get vibes at 3" and some don't

 

you should be able to see your engine mounts a tear will be easy to spot

 

I am having an similar issue.

I have read a lot of these threads and will definitely checkthe drive shaft u-joist and well as motor and trans mounts, but I don’t thinkit is the T-case drop / lack of a SYE... I have a 3” with 33” and never feltvibes until my last outing. Rode her pretty good and went through some deeppuddles and thick mud and just recently started feeling the vibes around 60km/h and definite around 80 km/h. I am a little surprised that no one hastouched on a slipping clutch??? Mated with a warped fly wheel like mine (L) that would make senseto me, dose anyone else agree? When the clutch it loaded under acceleration, itmight be enough torsion to break that static friction to begin slipping?

EDIT:
I don't think its the clutch anymore... vibes as soon as I touch the gas and If that's clutch slipping, I wouldn't have got out of my driveway haha. ill check my driveshafts and u-joints first.