- Joined
- July 28, 2012
- Messages
- 1,267
- Reaction score
- 161
- City, State
- North Ga
- Year, Model & Trim Level
- 05 F250 6.0
Thanks for the info guys. Im going to start with the valve body and see where it gets me. If not I'll move up to the solenoid pack and servo bore.
Question, the line pressure relief valve is in the pump. Can I remove the pump from under the truck or does it require the transmission to be removed? I saw some info about using a puller to yank it out, but not if the trans was still in the truck or not. That's a $30 part from SONNAX and worth looking into.
You would have to remove the transmission to get to this valve, it can stick and cause all kinds of line pressure problems, sometimes the can hang wide open and you can't get any engagement in to a gear at all. Valve body problems with this transmission are mostly problems hot and during a shift.
First thing to conform is fluid level, engine running in park.
Remove pan and inspect filter and its seals to the valve body.
Delayed engagements in both forward and reverse especially cold tend to be with the pump, the pump valve or converter drain back.
Servo bores won't have anything to do with delayed engagements or falling out of gear at a light.