ILRob

I need some advice...this weekend I replaced (upgraded) the original (150,000+ miles) suspension on my '98. Coils, shocks, links, stabilizer in front and leafs and shocks in back. I decided to add a Teraflex 1.5" budget lift with shackles and spacers. Everything is installed but now I have a vibration that was not there before I started. I think my pinion angle is still good. The lift did not say I needed any modifications. Any help or ideas would be appreciated.

Big David

You might want to have your frontend lined up.

macgyver35

Yeah, most likely an alignment issue. It would be highly unusual for a 1.5" lift to cause drive-line vibes. I put a 2" on my 98 with zero issues.

Big David

I had 4.5 in the rear of mine & had no vibes.Stock rear D-shaft.

took it out cause it was too much lift

MBK

I had a slight vibe in my 4.5" lift w/ transfer case drop and 6 degree axle shims. Driveline angles looked okay. Took it down the road to the alignment shop and felt a vibe, wouldn't call it death wobble. Got an alignment done and still slightly present during acceleration between 25-40mph then goes away. Still looking for some root cause of the problem but for now I just live with it (until something breaks). I have driven about 1K miles on it as is and haven't had any problems. Hope you find a solution.

Big David

Tire balance off?

ILRob

Thanks for the leads. Not the tires or UV joints. I'm thinking that I may have too much of a difference from the front to the rear. I replaced my worn leafs with HD 7" arch leafs and 1.5" shackles. There is a difference in the way she sits too. I think I may have to switch the lift shackle back to a stock to level it out. I'm attempting to add a pic too.

canada_man

looks good. Gotta remember that the new leafs will settle after a bit, after a month mine has settled almost 2"

ILRob

I figured out my vibration. The shackle I was sent are 3.5" instead of 1.5". Good for me but now I have to buy the front separate. Then I have to change my shackles ... again.

G-money

Worn u joints in your shaft. They were so used to the angle before the new suspension that when you lift it a little, the joints start to wear differently and cause vibes