Hello all,
2004 Ford e-350 5.4 4r100 trans.

For a while now ive had intermittent trouble with my 4r100 transmission. It seems every so often the overdrive light on the gear shifter begins to blink and the transmission begins to act kind of erratic. Shifting between gears seems aggressively rough and overall performance is somewhat strange. When this issue began earlier in the year, all signs and along with my scanner pointed to the 1-2 shift accumulator and so i changed it out. Its been fine for about 5 months now but the same issue just returned. If I pull over, shut the truck off/on, the issue is gone.

Well lately its happening more frequently. I did get lucky and finally got a check engine light.

p1000 drive cycle test not completed
p0741 Torque converter clutch solenoid circuit performance or stuck off.
p1744 Torque converter clutch system Performance/stuck

I suppose that should leave me to believe that there's an issue with the Torque converter clutch solenoid. Or could it be the torque converter itself? Is that solenoid at all accessible outside of the trans?
Like i stated, if i turn the truck off and on, the issue disappears but eventually comes back so it seems like its electrical. Im at the point where its beginning to happen almost every drive cycle.

 

It's not electrical. The torque converter clutch solenoid is sticking. It is located on the solenoid body inside the pan. It is not the torque converter itself.

 

Thanks Mark, well that's a relief that its not the converter itself. So while assuming that the pan needs to be removed, will i need to remove the 1-2 solenoid pack to get to it or is it easily accessible once the pan is removed? Is it likely to do damage driving locally until the weekend? I just ordered the part.
Thanks

 

It won't damage it. The part is not at all hard to change once the pan is off.

 

Thanks again!

 

Might try a bottle of Lucas Transmission Treatment first. Had a similar problem on an E4OD and that fixed it. Solenoid gets gummed up, the Lucas removes the gum. Used the same stuff on a 40 year old 58000 mile C6 that had shifting issues, it fixed that too after a block down the road

 

I suppose its worth a shot although i just got the part in the mail. Truck ran good today. I was going to change it out tomorrow but forgot to order a new filter. Maybe I'll try some lucas while waiting for the filter.
Thank you

 

Old thread but new member, been reading advice and found very helpful. Thanks.
2004 F250 7.3 ltr duel cab drop side with fifth wheeler purchased 10000 km ago.
I've got a good reverse but not much go forward.
A couple of times in the past I have had this same problem but were short lived. Always seemed to happen after a reasonably hard reverse.
Serviced the Tranny with new filter fluid and Pennzoil additive conditioner not stop leak, 2000 KM ago.
Pulled the solenoid body and proved all working except for the TCC, which shows correct impedance but is stuck open. Gently probe ball with multi meter lead, and can blow through easily.
1 Am I correct in saying this TCC should work in the same manner as the others, full height/closed with no power and pull in short/open on power up? (being PWM I didn't apply voltage across solenoid)
2 A reasonable amount of burnt gunk inside this time, is this possibly a result of the TCC stuck open and or my additive working flushing it out?
Again thanks for the informative thread Garbo.

 

oooooooooo

 

No, a new solenoid body will not help. So far nothing you've looked at could cause your problem. There is NOTHING electrical that can cause no forward gears.

No forward can be caused by very low fluid, an internal filter that fell out so that the pump can't get any fluid out of the pan, or most likely, something mechanical broke inside the transmission.

 

Would that hold true for a 2004 e-250 4.6l 4R70W
Codes P0741 & P1728
Hit a pot hole and lost 3rd, (assuming O/D) shifts 1-2 but goes "neutral" on 3rd upshift. It will engage when OD switched off or manual 2.
Live data shows module calls for 3rd.
checked continuity for 3 solenoids and internal harness, all were continuous (not infinite)

Thanks in advance
Greg V.

 

Yes, it would. Nothing electrical can cause no forward gears on yours; either.

But you have first and second gear. You should start a new thread with your problem, what you have is not related to this thread in any way.

 

Ok, Gotcha
I'm sorry, I'm new to this (any) forum and don't have experience with threads or posting etiquette.
Thank you for your response.
I understand you and if need be, I will post a new thread.
Thanks again Mark, I appreciate it.
Greg