[barryf350]

Its kind of a clunk noise. I have BTS trans with 220k on it with regular fluid changes. Currently using Royal Purple ATF. Truck has 310k on it with no rearend work or universal joint replacements other than that middle drive shaft support dealybob. To avoid clunk takeoff, I have to ease on pedal which I do. My guess is to check rearend first and maybe replace u-joints since they most likely need it. Anything about TC or Trans, I have no idea.

 

[MADVAN]

At 310K.
Check pinion slap(play).
Do you have a LS? Could be clutch pack.


Bill

 

[TestDiesel]

I posted something similiar to this a few weeks ago. My truck was having very similiar symptoms and the majority opinion was to regrease the slip joints in the drive train. Havn't done it yet so I cant say that it fixed the problem but I'm planning on it here soon.

 

[HoneyShucks]

[ QUOTE ]
Its kind of a clunk noise. I have BTS trans with 220k on it with regular fluid changes. Currently using Royal Purple ATF. Truck has 310k on it with no rearend work or universal joint replacements other than that middle drive shaft support dealybob. To avoid clunk takeoff, I have to ease on pedal which I do. My guess is to check rearend first and maybe replace u-joints since they most likely need it. Anything about TC or Trans, I have no idea.

[/ QUOTE ]

Here is a link how to check and grease slipjoint. And I would replace the U-joints at the same time.

http://www.eurekaboy.com/f250/slipjoint.htm

 

[barryf350]

yes, limited slip 4:10

 

[84368]

I have about the same problem!!! Mine feels like theres something in the bed and when I take off from a stop it feels like what ever is in the bed slides back and hits the tailgate, but there nothing in the bed of coarse. It gets worse as the temps come up in the trans. I've never got over 170 deg though. Ben