Transmission plugs different !!
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Cross-Country
Joined: Aug 2018
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Transmission plugs different !!
I have a 1994 F150 that I'm putting a 1996 E40D trans in. Of course I didn't realize the plug was different Until I installed the trans. The plug for the coil pack is different. I have the whole trans harness from the 1996 that plugs in right under the master cylinder. Do I cut the plug and splice it in or replace the whole harness. Will this even work ? I've seen posts about putting older trans in newer truck, but didn't find anything about newer trans in older trucks. I know about the changing of diodes from trans to PCM in 1995 and I've taken the PCM from the 96 into my 94. All parts are speed density. Not MAF. Any help would be appreciated.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,717
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From: SE Florida
Since you have the 1996 PCM and a 1996 transmission, it makes sense to use the 1996 harness from a transmission point of view. I have no idea how well that will work for the engine.
You could swap the solenoid body (I think that's what you call the coil pack) with the older one and use the 1994 harness and PCM.
You could swap the solenoid body (I think that's what you call the coil pack) with the older one and use the 1994 harness and PCM.
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Cross-Country
Joined: Aug 2018
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Since you have the 1996 PCM and a 1996 transmission, it makes sense to use the 1996 harness from a transmission point of view. I have no idea how well that will work for the engine.
You could swap the solenoid body (I think that's what you call the coil pack) with the older one and use the 1994 harness and PCM.
You could swap the solenoid body (I think that's what you call the coil pack) with the older one and use the 1994 harness and PCM.
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Cross-Country
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Both trucks are F150. the 1996 had the 5.8 and e4od which is now in the 1994. No cali emiss. They both are 4X4. The 1994 is a f150 centurion crew cab. The 1996 is a extra cab. Everything is speed density. PCM, engine harness, truck harness......all SD. No MAF. Both trucks under 8500. My door tag on the 1994 says "E", which means it had a e4od when built, Correct ? It was bought with no drivetrain in it. And I know it had the 5.8 in it also. So , now it has a 5.8 and a e4od back in it and we go to hook it all up and the one tranny plug on the passenger side is different. It's flat on one side and hexagon shaped on the bottom. Everything I see online shows that plug to be for a 4r70w trans. Then I thought maybe someone spliced that in , so I checked the entire trans harness...no splice. If this truck is showing a "E" on the door tag, how could it possibly have a 4r70w plug in the harness. Unless FORD used that plug in 1994 and before. I need to make this work somehow, TRANSMISSION GURU'S , WHERE ARE YOU ?????
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Cross-Country
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Also, I pulled the harness out of the 96 and where they plug in up by the fire wall, the big plug fits but the smaller plug is different. Is that where I need to splice in ? Or do I need a whole different harness ? I also matched the wires on both plugs. the only difference is the 4r70w plug has 3 power wires, 2 are used on the e4od plug. The e4od plug has a wire for a "coast clutch solenoid" on it and I don't know where that would go. So, 4r70w has a extra power wire and e4od has the coast clutch wire , I did find out the coast clutch wire is #20 at the PCM. Somebody HEP me.
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Hotshot
Joined: Jun 2015
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As in you have already disposed of it?
Mark was saying you could use a valve body for a ‘94 in the ‘96 transmission. I’m not sure why you are talking about maybe it was a 4R70W.
Mark was saying you could use a valve body for a ‘94 in the ‘96 transmission. I’m not sure why you are talking about maybe it was a 4R70W.
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Mountain Pass
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https://www.ford-trucks.com/forums/1...terchange.html
See post #7
Also the 96 should be obd 2 and the computer and wiring would be different.
See post #7
Also the 96 should be obd 2 and the computer and wiring would be different.
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
Hang in there. Subford didn't ask you those questions for his curiosity. I'm sure he's working on sorting out the options for ya. He's good. He's really good. 
Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
The 1994:
Attachment 277397
================================================== ======================================
The 1996:
/
Attachment 277397
================================================== ======================================
The 1996:
/
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,717
Likes: 2,643
From: SE Florida
Solenoid body, not valve body.
The 5.8L engine never had OBD-II They were all OBD-I.
https://www.ford-trucks.com/forums/1...terchange.html
See post #7
Also the 96 should be obd 2 and the computer and wiring would be different.
See post #7
Also the 96 should be obd 2 and the computer and wiring would be different.
Cargo Master
Joined: Oct 2016
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From: Northern VA
I know Joe's 96 donor is ODB2 MAF from talking w/ him. Just a typo on his part. So how does he make his 1996 ODB2 E4OD plug into the original 1994 SD harness? He says the 9-pin or so connector is different.
I sent him a 97 ODB1 SD PCM he is using, so that has internal diodes, where as his original did not--this means he must run a new wire back to the PCM?
To clear things up, he dropped a 1996 5.8 + E4OD into a 1994 truck with original harness. All his wiring is from ODB1 speed density 5.8. He is not using any ODB2/MAF wiring. --Only the solenoid pack plug on tranny does not mate to 1994 harness.
To further muddy the waters, he said the original 1994 E4OD solenoid pack connector fit perfectly with the 4r70W that was mistakenly installed for a short time. The plug just happened to match right? I would highly doubt that the original harness was modified.
I sent him a 97 ODB1 SD PCM he is using, so that has internal diodes, where as his original did not--this means he must run a new wire back to the PCM?
To clear things up, he dropped a 1996 5.8 + E4OD into a 1994 truck with original harness. All his wiring is from ODB1 speed density 5.8. He is not using any ODB2/MAF wiring. --Only the solenoid pack plug on tranny does not mate to 1994 harness.
To further muddy the waters, he said the original 1994 E4OD solenoid pack connector fit perfectly with the 4r70W that was mistakenly installed for a short time. The plug just happened to match right? I would highly doubt that the original harness was modified.