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Greetings Gang,
I have a 96 F250, 351ci 4x4 man trans. My PCM has cooked.
Got in it one morning, hit the key, it fired up and ran about 2-3 seconds, then died. After going over, found the pic below.
Are there any schematics out there for the PCM? I am trying to ensure that when I plug the new one in, it does not get cooked.
I have compared the part layout to a new one, and there are no parts in "that area" to cause this great of a burn. The electrolytic capacitor there is still in tact. Seems to be a major short or sever over current.
I have, with the PCM out, measured grounds (all below .015 vDC), Positive volts are appearing correctly. Measuring each pin of the PCM connector to ground and Positive 12v (battery is disconnected). Everything is seemingly measuring correctly, or not anything ridiculous.
One thing, what should the fuel pump measure in ohms?
What can I do to ensure, if there was a problem outside of the PCM, I can find a problem if there is one?
Any and all advise is greatly appreciated.
Thank you all,
Bill
Greetings Gang,
I have a 96 F250, 351ci 4x4 man trans. My PCM has cooked.
Got in it one morning, hit the key, it fired up and ran about 2-3 seconds, then died. After going over, found the pic below.
Are there any schematics out there for the PCM? I am trying to ensure that when I plug the new one in, it does not get cooked.
I have compared the part layout to a new one, and there are no parts in "that area" to cause this great of a burn. The electrolytic capacitor there is still in tact. Seems to be a major short or sever over current.
I have, with the PCM out, measured grounds (all below .015 vDC), Positive volts are appearing correctly. Measuring each pin of the PCM connector to ground and Positive 12v (battery is disconnected). Everything is seemingly measuring correctly, or not anything ridiculous.
One thing, what should the fuel pump measure in ohms?
What can I do to ensure, if there was a problem outside of the PCM, I can find a problem if there is one?
Any and all advise is greatly appreciated.
Thank you all,
Bill
Sorry for resurrecting a dead thread but did you ever figure out what was behind this?
These cost to much money to fool around with
Sorry for resurrecting a dead thread but did you ever figure out what was behind this?
These cost to much money to fool around with
If your board is bad grab some pics of it and make a fresh post. These as a course of maintenance need the electrolytic capacitors and assorted blown resistors changed within 20 years usually. The longer you go the greater the risk of a failure. Reman is still around 200 ish. But fewer people are doing them. Also shorting out circuits during testing and letting the smoke out is a known killer of boards.
If your board is bad grab some pics of it and make a fresh post. These as a course of maintenance need the electrolytic capacitors and assorted blown resistors changed within 20 years usually. The longer you go the greater the risk of a failure. Reman is still around 200 ish. But fewer people are doing them. Also shorting out circuits during testing and letting the smoke out is a known killer of boards.
Oy. Well taKe some pics. And see if it's fixable. Otherwise you could do like a microsquirt standalone. That's cheaper. 1500 bucks is steep. Is there no other company selling your model? I know the local ford wrecker does have shelves of computer cores. If you're lucky your just change a few capacitors and you're good to go. 1500 is the highest price for a reman computer I've heard that wasn't European.
