2004 Ford F-150 slips

RAY30

MEMBER
2004 FORD F-150
V8
4WD
AUTOMATIC
99,000 MILES

We have this F150 and when it shifts to OD the transmission just neutrals out. When we were rebuilding it the direct drum and clutches were burnt so bad that we replaced all of that section. We also used a standard rebuild kit and a new torque converter. The problem is the same even after the rebuild. We have went through the valve body and checked for stuck valves and made sure that all the screens are clean. Do you have any thoughts on this?

3 Replies

FLEXY5

MECHANIC
512 POSTS

My first thought is to recheck the direct drum assembly for missing or damaged seals. You can use reduced air pressure and a nozzle to test all of the clutch assemblies. Then check all the case portals for debri. Is this the 4R70W or the 4R100?

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Wednesday, March 24th, 2021 AT 10:05 AM

RAY30

MEMBER
3 POSTS

The transmission is a 4R75E. When we took the transmission back out yesterday we did air check the case and the drum everything seems alright. I thought that we had changed the direct drum but all we did was the steels, clutches, and seals. I got a whole new assembled drum last night. We are installing it right now. I will let you know how it turns out.

Was this

answer

helpful?

Yes

No

Wednesday, March 24th, 2021 AT 10:05 AM

RAY30

MEMBER
3 POSTS

Well we replaced the direct drum with a new complete unit and the transmisison works fantastic hurray! Just thought I would let you know. Thanks for the help

Was this

answer

helpful?

Yes

No

Wednesday, March 24th, 2021 AT 10:05 AM