Sounds like your pinion angle could be off.....worn out springs could be the cause.....a lifted jeep could also do it. Or you could just be an animal behind the wheel. lol ....Did you grease the u joints when you changed in the new one before you drove it?
Function over Form
31" A/T's--1" Daystar--XRC8000--4.0HO--Rhino Int. Dual Battery setup
Make sure the end of the u-joint is touching the little bump stop inside the yolk. There should be little square stop that holds the end of the ujoints in place. If you have the wrong size, it will be short of this little stop by about 1/8". I will get you pics today if I can.
I think I have same problem. just changed ujoints about 3 months ago and are making noise again. when I tighten straps up, i can still move shaft back and forth a little. would that be the wrong part?
If you still have side to side movement after the straps are tight, then you have the wrong u-joint installed.
The spicer part numbers are 1310(stock for the older YJ's) for the smaller and 1330(stock for the newer YJ's) for the bigger joint. I'm not sure which ones you would need, cause mine is a CV joint shaft that doesnt take either.
OK, my 90 YJ (4.2/5 speed) ate two rear U-joints in the last 15 miles. I am wondering if I may have lost the first one due to lose strap bolts and perhaps the second due to damage (bent?) driveshaft from the first failure. I will order new u-joint components and confirm the size but I wonder if I should replace the drive shaft. Is there a rear bearing in the transfer case I could have damaged? Thanks.
1990 Jeep YJ - 4.2 - manual
The rear is a different size than all the rest. It is bigger. Make sure you are getting the correct one to fit.
The retards at the parts store will tell you they are the same, but they are not. The fronts will fit, but be about 1/8 shorter. This allows movement and desroys the u-joint.
Are you taalking about the front and rear u-joints on the rear drive shaft? I replaced mine a month ago, and both were the same part number. I rechecked after reading this thread. Mine are the same size and fit fine. There is no 1/8th gap and they are not loose.
'93 YJ / 3.5" lift (2.5" Old Man Emu suspension and 1 inch shackle) / 31 X 10.50 BFG's / 2.5 power / 5 speed / Quadratec winch..........KCCO!!!
I had the opposite problem: U-joint was too tight. I have an SYE and new driveshaft and the tolerences appear to be a little tighter on my driveshaft for the rear u-joint. I ate through the original u-joint pretty quickly. When I replaced it I really compressed it and still couldn't get the c-clips in. The straps fit perfectly on the diff side. I ended up grinding down the thickness of the c-clips just a tiny bit and it fit into the driveshaft just right.