2000 XLT 3.0 At 4x4 4R44E Clunk

[Cleanster]

I have searched the forums for anything that sounds like my issue to no avail. 2000 XLT 3.0 At 4x4 4R44E with 120 K when I excelerate normally from a standing stop there is a clunk and it can also be felt on the downshift when stopping, but not as forceful. I feel the clunk right under my feet. If I excelerate slowly it does not happen. Checked trans mount no problem. I dont feel any other problems shifting. Replaced rear end with an 8.8. Mech wants to rebuild trans just looking for your opinions. Thank you in advance.

 

[Earl43P]

That sounds like classic "slip yoke".

Search using those words.

 

[Cleanster]

Thanks will sure look into it, from what I could find on slip yoke problems it matches my symptoms exactly. Thanks for your service 20 years Navy here.

 

[Earl43P]

You're welcome. I did 6 yrs, 9 days (got out 28 years ago!) and I appreciated all those rides from your Gator Navy brethren. Rode the Iwo (LPH), plankowner on the Nassau (LHA), Tripoli, Guam, Saipan. Did a few rides on the JFK, Nimitz and GW while I was at Jax.

I lived in Jax 00-03, was working at NAS.
Was happy to see it in my rear view mirror!

Go to your User Control Panel and Group memberships and get the Vet member banner you SO rate.

 

[Cleanster]

Finally had the slip yoke serviced and the clunk disappeared.