No movement in the yoke. I will go ahead and replace this loose one. I might as well replace the joint on the back shaft to, its original and I have no idea if previous owners greased it, I also cannot get grease to come out one of the cap junctions.

 

You said you rebuilt the UJ and it had that little play in it. Question:

1. When you installed the UJ caps into the yoke, the caps were snug in the yoke?
2. You did not loose any needle bearings?

 

IIRC the UJ are around 15 - 20 bucks. Cheap enough for peace of mind for a long trip.
Just gotta supply the elbow grease.

BTW enjoy the trip!

 

Thanks! Never been to the outer banks, want to try some sand driving! I have advance auto holding 2 moog u-joints. Ill try to put them on after work tomorrow.

 

i get the same thing at speeds described

 

have you tried anything to fix it?

 

Same thing here for over 2 years. Rebuilt front shaft twice and replaced rear rotoflex. Can't figure it out. I am anxiously following this thread to see if you figure it out!!

-aaron
2003 SE7 130000 miles

 

Ill post updates as I try different things.

 

does anyone know what size nut is used holding the rear driveshaft and if it is a nylock nut that needs to be replaced or can the old ones be reused? If I need new nylocks I want to grab them while out in the city today.

 

Just replaced the u-joint on rear shaft, it seemed okay maybe a little floppy. But, I think I found the problem. Several of the nuts holding the shaft on where about finger tight. You can see where the shaft rubbed a shiny spot on the parking brake drum


Also, because of the slop the set screw on the drum had backed out proud of the drum face, slightly holding out the yoke flange. You can see the imprint on the flange


So If I had tried to tighten the nuts down the set screw would have held the flange slightly crooked. So If you find these nuts to be loose, you need to drop this side of the shaft and make sure the set screw on the drum has not backed out.
I will try to get it out on the interstate tomorrow to check if the vibration is fixed, but I would be shocked if this was not the cause of my problem.