new computer in older truck to control newer trans?

[tootalltechie]

Hi
I was just wondering if anyone has tryed to swap in a new computer to control a newer automatic transmission?
I have a 1992 Aerostar 4.0L EAWD and thinking of changing the transmission (A4LD) to a more modern version. Has anyone done this in a Ranger or Explorer?

 

[schmidlkofer]

interesting thought...but i dont have the answer.

 

[BrooklynBay]

Any transmission above the A4LD would require a different wiring harness. Which transmission do you have in mind (4R55E, 5R55E)? You would need the PCM from an OHV engine, not a SOHC engine.

 

[tootalltechie]

Any transmission above the A4LD would require a different wiring harness. Which transmission do you have in mind (4R55E, 5R55E)? You would need the PCM from an OHV engine, not a SOHC engine.

I'm thinking of any of those that would fit in my Aerostar. Wiring is no problem to me, I'm a Electronic tech. I have to hook up the transfer case (T28) to the transmission. I have 93, 97 truck service manuals on CD plus there is the info I can get from the local library. I figure using the computer from the vehicle that the transmission came from is cheaper than getting a stand alone controller. But this all could be wrong since I have not done it yet.

 

[410Fortune]

not wrong at all

why not grab the later model 4.0L engine along with it and complete the swap? It may make it easier then trying to mix a OBD-I engine wiring harness/sensors/fuel system with an OBD-II transmission controller.

I dont think you will find a stand alone controller for the v6 automatics on the market?

First decide what year trans you want to use, then work backwards from there.

 

[Glacier991]

Read the sticky thread about the 5R55S Swap into a 2nd gen.

 

[BrooklynBay]

http://www.explorerforum.com/forums//showthread.php?t=181811