1st, I'd like to say howdy everyone, I'm new here.
2nd, I have a 1990 F250 Custom automatic 4x4 with a 351 and an E4OD transmission.
3rd, I do 90% of my own work on my vehicles.
4th, HELP....
Ok... so my old tranny burnt up, took it out and put in another one (out of a running/ shifting truck), truck starts perfect, goes into gear but won't shift..... it is now at a transmission shop and they can't figure it out.... and for some reason when they hook the computer to it, it says can not connect. They have tried two different computers. Still the same outcome. They pulled the tranny and put new pump gears, new converter, new shaft and all that fun stuff in it and still it goes into gear but won't shift. Note: no sensors or anything like that were damaged or replaced. There are no idiot lights on in the dash. All fuses and relays are working as they should. However, I did install a new starter prior to having it towed the the shop....
Any help would be greatly appreciated. Could it be a ground??? Or maybe a broken wire???

 

May be a simple question but have you verified the shifter is moving at the transmission? If so, can you feel it go into detent when you shift gears? This statement is confusing can you please clarify. " truck starts perfect, goes into gear but won't shift" .. Sandy

 

The transmission will engage in each gear...however while driving it, it will not shift up nor down on it's own, as it should being an automatic.
hope this answers your question.

 

Take a look at this thread and see what you think. Sandy

https://www.ford-trucks.com/forums/1...s-harness.html

 

Try this method to retrieve your codes. You can just use a paperclip as a jumper.

 

It was a trans that shifted, but when put in your truck didn't shift, right? And the shop rebuilt the trans after this? You should take it to a shop that knows what they are doing. This one does not. A trans that works in one truck but not when installed in a different truck means the lack of shifting is due to something wrong in the truck, not the transmission. You will need to read the codes to know what's ailing the computer that should be making it shift.

 

What year of donor trans did you use?

 

how sure are you that the trans you got was an E4OD? Any way to get trans code off driver door of donor truck?

 

E4OD has 20 pan bolts. The AOD and 4R70W each have 14 bolts.

 

it will also have that 'beautiful' word METRIC stamped in pan, you know when you can look under or around something to see that bolt/nut and say 9/16 grab it crawl under and soon as you go to break it loose...METRIC! and scrap your knuckles on the concrete because you knew you should have took adjustable wrench with you.

 

Still grabbing SAE wrenches on 30 yr old or newer vehicles and adjustable wrenches for trans pan bolts? You really are from Alabama ain't ya? haha
I just wonder why didn't you take your hammer with ya under there so you could of just fixed it the first time?
I see a nasty twister went through your neck of the woods.Hope you and yours are safe.

 

twister was south east of me, killed 23, 7 in one family lived on same road(prayers go out to all of them), I'm lucky I have basement, 'Honey do-list checked off, hold my beer, where's my hammer watch this! and all is safe except for wood fence new Honey do!, hammer in waiting!