VIBES!!!!

[justtorchit]

Hokay, sooo....
I have some wierd vibes that pulse as i go down the highway. they start when the speedo hits about 65 and it pulses at a constant rate.

now i know everyones first thought is gonna be OMG SYE...

well heres the thing, before i put the baby lift on it (2-3" idk depends which way the jeep is leaning) i could feel the same pulse but it wasnt as bad. (i think the large tires and more rotating mass is making it more noticable)

so i put a new crossmember in (old one looked like a horse shoe) no change
new drive shaft- no change
new u-joints -no change

I have a sye T-case laying around, but i really dont think thats the issue. (the pulseing rather than just a constant vibe makes me think its not the issue)

so im thinking the rear end might have a bad spot when the teeth mesh in the wrong way to make this pulse.



Anyone ever have this pulse? was it an tcase issue?

i might just throw the SYE and a new rear end in (welded)

[Ruepart Hoaxley]

I had that in my green Jeep with three inches and stock tires on it. Turned out to be a front driveshaft

[justtorchit]

ill take out the front DS tonight... worth a try i guess....

i know i have slid that damn DS across a few rocks. but seamed solid and not really banged up. , STUPID FUCKIN LO PINION!!!

[1cleantj]

my tj had similar was front driveshaft. over the years of wheeling it developed play between the spline sections (slip part of it) and some play in the centering ball area

[LittleD]

Take out the front shaft and see if there still there, my front pinion bearings are destroyed and mine did the same thing