Transmission's fine until Restarting

[J1walters]

I have been having transmission problems and leave my truck, a 2001 sport trac 2wd auto e-ohc v6, in the driveway since it's not dependable. Every so often I will drive it, and the same results happen every time: I drive about 7 miles getting up to 65 mph, return to my neighborhood, shut off engine while I stop at a stop sign, restart engine, drive into 1st gear, and finally the transmission begins to act up, with flashing od light, by barely catching gears. The transmission works fine until I turn off and restart the engine. Any knowledge out there?

 

[429CJ-3X2]

shut off engine while I stop at a stop sign

I have no answers, just a question. WHY????

 

[J1walters]

I know that's my ?

I have no answers, just a question. WHY????

Could it be electrical or pressure within transmission not correct?

 

[429CJ-3X2]

No, I mean why are you shutting the engine off at a stop sign? Or stoplight?

 

[J1walters]

Yea

I was figuring what causes the problem that's why I restarted the engine.

 

[bdmaash]

get it rebuilt, heat from using it seems to be an issue

at some point it will stop working all together
- I changed valve bodies, helped a bit, but the fix was a rebuild with stronger parts