i just replaced the transfer case output seal and the rear pinion seal in my 95 xj. its has the dana 35 rear and the np231j transfer case. i just took it out for a drive today and felt a vibration at 50mph and up. the truck has never done this before and i've never beaten on the truck or even taken it offroad yet. what's going on with my jeep?

 

if you had to remove the driveshaft for this you might want to check and see if you centered it at the u-joint, mine was off center when i last replaced it and i got vibration.

 

makes sense. i plan on replacing the yoke (i chipped it last time it was out so the diff leaks) and both the u-joints in the driveshaft soon so hopefully that helps

 

nice i see, i'd recommend the brute force u-joints from advanced auto parts.

 

i dont have an advanced auto parts so im just gonna go with some duralast golds

 

any other ideas on what could cause this vibration? it never happened before and it only happens at 50mph and up