drive train clunking sound under acceleration.

[Brendon Kehoe]

Hi
I own a 2003 3.4 4x4. I recently did a leaf spring swap.Since then I get a clunking sounds only as i accelerate. I have gone through all my u joints, torn down my t case trying to find the cause. i thought it was going to be the t case output shaft bearing but those are ok. Im lost without my yota can anyone help?

 

[B-Man]

Welcome. Did ya recheck your ubolt nuts?

 

[texasred]

Taller leafs changing the pinion angle? Even a small change might stress old u-joints.

 

[Brendon Kehoe]

Welcome. Did ya recheck your ubolt nuts?

I have not yet. I will tonight I just dropped her after doing both differential tear downs. Thought maybe I had a planetary gear missing teeth or something but no. At this point u bolts are one of the few options left.

Welcome. Did ya recheck your ubolt nuts?

 

[Brendon Kehoe]

Taller leafs changing the pinion angle? Even a small change might stress old u-joints.

That was my first variable I checked was the whole drive shaft. Everything was replaced less then 3 years ago. They were all tight and no play I thought maybe it was the center carrier bearing. I replaced that and it's good all the U-joints an the center carrier bearing are good.

 

[B.C.]

Angle just a bit off can do weird things.
Also did you put the driveshaft back in it, in phase?

 

[B.C.]

 

[Tape]

If it didn't make noise before the leaf spring change, I would suspect it's something in the leaf springs.