obs with 4r100 swap

[Dijon Mustud]

wazzap my smokey amigos, i recently totaled my 99 powerstroke after having the 4r100 beefed up. so im looking into slapping it in my 94 obs, im wondering if i just swapped the pcm and if need be the harness do i also have to swap the solenoids and other goodies? i know ive seen this thread somewhere on here but im technologically slow so figured i wouldnt lose my own

 

[79jasper]

Wasn't here. Maybe powerstroke nation or powerstroke army.

Sent from my SM-N960U using Tapatalk

 

[snicklas]

@trackspeeder

Can this be done? I thought it was mentioned that the solenoid pack could could be swapped from the E4OD to the 4R100?

 

[Dijon Mustud]

but do i need to change any solenoids if im also swapping computers? it would be like putting the older engine in the 99 truck at that point yes? or running on the ground on a pallet...

 

[greenskeeper]

wazzap my smokey amigos, i recently totaled my 99 powerstroke after having the 4r100 beefed up. so im looking into slapping it in my 94 obs, im wondering if i just swapped the pcm and if need be the harness do i also have to swap the solenoids and other goodies? i know ive seen this thread somewhere on here but im technologically slow so figured i wouldnt lose my own

TC lockup control would be an issue.

The E4OD has an on/off solenoid.

The 4R100 has a pulse width modulation solenoid.

Not sure how you would get around that with an OBS PCM.

 

[lotzagoodstuff]

^ what he said above. The bang-bang versus PWM signal needed to lock up the torque converter has been documented as a struggle. I think it can be done but that's the biggest fly in the ointment so to speak.

 

[trackspeeder]

Early or late 99? Either way you cannot use the PCM.

Early 99 uses non PWM so you could just change out the DTRS and solneoid pack.
Late 99 is PWM. You will need to change out the solenoid pack DTRS, and front pump.

 

[Dijon Mustud]

thanks for the 411 fellas looks like ill be taking both transmissions apart then. pretty sure its a early model 99 so at least there's that, ill let ya know how it turns out

 

[gnathv]

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[gnathv]

This will turn your pwm pump to on off

 

[Garbage_Mechan]

Mark Kovalaski over on PowerstrokeArmy is a former Ford transmission engineer and has discussed this over there.