PerryB

I had a '91 F150 with a 5.8 that I bought new. It had an E4OD.
As to the original question, if the problem does actually stem from a T/C failure, its polluted the entire transmission. Either way you're looking at an overhaul.

4.9I6e4OD

So a torque converter and transmission swap could solve all the problems?

Chris_1

iTrader: (1)

Thing is, the E4OD is an electronically controlled transmission, shifting controlled by the ECM, which uses input from the PSOM - electronic speedo- which the 90's didn't have, they had the cable drive speedo.
I'm just thinking out loud here and maybe somebody can correct me, but it was my understanding that to put an electronic transmission into a cable drive speedo truck (lots of people have) you would have to use a stand alone computer to run it.
I may be wrong on all that but... if somebody swapped that trans in, the whole computer control thing could be what's causing your issues possibly.
Worth doing some research on before you spend money.

Chris_1

iTrader: (1)

Most 92/93 F150 auto's came with E4OD's that I've seen so far. I've personally yet to see one in a pre - 92 (pre PSOM) truck.

gregd

My 90 also has the E40D. OD button on dash.

Chris_1

iTrader: (1)

I stand corrected. It did come out in 1989.

BLDTruth

I always assumed the same as you but some googling revealed 1989 as well.

Which raises lots more questions for me than provides answers - mostly because of the electronic/cable conundrum you talked about in your earlier post.