I've got the tier 4 Core 4x4 adjustable arms with Johnnie Joints. They are 9 months old. This is where mines at today. It was at 0 degrees to start then 1 degree after a half turn (vibrated). I made another adjustment "1 full turn" didn't get my angle but should be between 2 or 3. Still vibrates. (Im at work so I'll have to get my angle finder on it tonight to see where I'm at and make another adjustment.
New SYE and CV vibrates at 70 mph
- Thread starter EROCK
- Start date
CAs are good I think. 9 mth old "Tier 4" Core 4X4 adjustable short arms with Johnnie joints. Just got their second grease at the beginning of bow season a mth ago. Also trac bars are the same age.
I wish. Took it on the bypass at lunch and still getting the Vibration from the back at 70+. Its not terrible but is enought to feel through my seat and feet in the floorboard and I know it's just trashing my bearings.
Disconnect your front drive shaft to isolate. While it may feel like the vibes are coming from the rear, they can be elusive as they travel thru the frame and then tub. Get a digital angle finder like the one @DrDmoney posted. I measure pinion angle by putting the angle finder on one of the vertical flats on the back of the diff housing and subtract from 90*.
If after disconnecting the front drive shaft and you still have vibes, then I'd suggest lowering the t-case skid a 1/4" at a time with washers and longer bolts. Chances are your ujoint operating angles are not happy. That's the sucky part about SYE's. They are not a cure all for vibes.
If after disconnecting the front drive shaft and you still have vibes, then I'd suggest lowering the t-case skid a 1/4" at a time with washers and longer bolts. Chances are your ujoint operating angles are not happy. That's the sucky part about SYE's. They are not a cure all for vibes.
Sorry I meant you’re probably not getting excessive rotation from worn out suspension parts. Try what @bobthetj03 recommends, if no change Try removing the rear shaft and driving on the front. If the vibes are gone then at least you confirm where the problem is.