Transmission will not engage in my 95 xlt 4x4

[Themex34]

So I have a 95 xlt 4x4 with the 4.0l and I had recently replaced the transmission and transfer case from a 95 that was in an accident. All worked well up until I was leaving work and shifted into drive and it would not shift or engage so I kept rehung the engine and nothing so it threw it in gear 1 and revved it up to 3k and it shifted into gear and then I threw it into drive and it shifted gears like if it was brand new im not sure what to replace im thinking the range and speed sensor and the O/D light has been blinking since I installed it. Any suggestions or anyone with my issue please help im not sure weather to junk it or keep fixing it just love the darn truck.

 

[Fix4Dirt]

does it do it again? if it engages in 1 and if you shift it to 2, does thst work? that usually indicates a VB issue. and imo i wouldnt rev it to 3k then let it drop into gear, that aint good for the trans and sends a huge shock through the drivetrain, a great way to earn yourself a rebuild imo. can you read the code for the od light? odd though that it worked fine in D, iits usually it doesnt work in D fully, and 12 works, so i wonder about this one if it is indeed a vb issue, or just slow to build pressure

 

[410Fortune]

Flashing od light means you are in limp mode and there is a problem with the transmission

You need to retrieve the transmission trouble code(s) and go from there

Assuming you have already confirmed correct fluid level?

 

[410Fortune]

Flashing od light means you are in limp mode a there is a problem with the transmission

You need to retrieve the transmission trouble code(s) and go from there

Assuming you have already confirmed correct fluid level?

 

[Themex34]

I have

Flashing od light means you are in limp mode a there is a problem with the transmission

You need to retrieve the transmission trouble code(s) and go from there

Assuming you have already confirmed correct fluid level?

I have checked the fluid and it’s topped up haven’t used it in a few months since I don’t wanna ruin the trans more, I’ve also gotten me a Ford obd1 scanner and I’ll be getting the code soon when I can have a chance

 

[Themex34]

does it do it again? if it engages in 1 and if you shift it to 2, does thst work? that usually indicates a VB issue. and imo i wouldnt rev it to 3k then let it drop into gear, that aint good for the trans and sends a huge shock through the drivetrain, a great way to earn yourself a rebuild imo. can you read the code for the od light? odd though that it worked fine in D, iits usually it doesnt work in D fully, and 12 works, so i wonder about this one if it is indeed a vb issue, or just slow to build pressure

It does move on 2 and drive like normal and I’ve let it sit in drive for around 20-30ish minutes to build pressure yet nothin, valve body is the next route but I also just wanna say to hell with it and throw a manual in it and just quit the automatic

 

[Fix4Dirt]

It does move on 2 and drive like normal and I’ve let it sit in drive for around 20-30ish minutes to build pressure yet nothin, valve body is the next route but I also just wanna say to hell with it and throw a manual in it and just quit the automatic

manual swaps have been done, but they are rather complicated imo