ecm info
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ecm info
hey ive been told that with my 94 power stroke i cant chip it cause i dont got a data stream and the ford dealer hear wont flash it for me so i was wondering if i grab an ecm out of a 95 or a 96 truck will it hook right up with my harrness
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Joined: Jul 2003
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From: Newport, WA
I can't remember exactly, but I looked up the pin-outs and 94 is different than what is shown for 95-97, and of course the CA emissions trucks are different as well. A late built 94 might have the later PCM configuration which is why you were able to swap without problems. I thought all 94.5-95 trucks were the same, the info in AllData seems to have changed slightly since I last looked.
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From: Newport, WA
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That's weird. Mines a first month truck. I have that 97 ecm on it and the engine harness is 97 too. Strange. It's working great. I went and reflashed it myself a couple days ago too. The ford dealer I used to work at forgot how so they let me do it.
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From: West Texas
You don't need a harness. I replaced that a couple years ago because I fried a valve cover connector. I have a 97 parts truck sitting in the back yard so it was cheap. I really can't see a problem with a 96 or 97 ecm either. Mine isn't the first one I have done. In 96 and 97 especially, I was reflashing these early ones but we also replaced a lot of ecms and went with a newer model. It cured a lot of drive ability problems on the 94's. I'm going to look into the pin out more though. THis is the first I've heard that and kinda confused. My breakout box works on 94 and 97 and I have always used the same pin charts. In fact I got that thing in 97 I think and the chart says 97-current.
The only thing I knew was different was the pins going to the eec4 connector under the hood and 94's are short one wire on the dlc under the dash. It still works though with the right code flashed on it. On and automatics have several extra wires that are active on the ecm plug. Mine came off an automatic. Flashing it just disables all those circuits since we have stick shifts.
The only thing I knew was different was the pins going to the eec4 connector under the hood and 94's are short one wire on the dlc under the dash. It still works though with the right code flashed on it. On and automatics have several extra wires that are active on the ecm plug. Mine came off an automatic. Flashing it just disables all those circuits since we have stick shifts.
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well i was thinking that if say the newer ecm wont work with my old harness would 96 harrnes and with the ecm hook up with all my plugs and **** but i talked with the ford diesel tech and he said if i get another ecm out of a 5spd truck and all the same options it should work. well he just figures it should work
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From: West Texas
It will. Personally though, I'd just reflash yours to MLE1 which is the most current level flash for it. Or get another one and flash it to that. I took mine out of an auto 97 and it works fine now that it's flashed right. Before it was flashed, it wouldn't idle right and was surging real bad. It's just perfect now.
It has to be flashed for a 5 speed. That's all I'm aware of.
It has to be flashed for a 5 speed. That's all I'm aware of.
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They don't need it for a reflash. That's done through the DLC under the dash.
That was just for diagnosing these things up through the 94 models. We could only get codes back then and couldn't see any live data so diagnosis was a pain without a way to see what the computer was seeing.
That was just for diagnosing these things up through the 94 models. We could only get codes back then and couldn't see any live data so diagnosis was a pain without a way to see what the computer was seeing.
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Joined: Jul 2003
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From: Newport, WA
I'll definitely take your word for it over a picture. I wish I could remember where I first heard that the pin-out was different so I could post the link.