Need new Pcm For Early 1999 F250 Super Duty
#1
#2
Yes you can use other PCM's not sure on exacts but DPC-402 or DPC-422 I think will work.
POWER STROKE PCM CALIBRATION INFORMATION[1] (1).pdf
If I can ask though...Why do you think you need a new PCM?
POWER STROKE PCM CALIBRATION INFORMATION[1] (1).pdf
If I can ask though...Why do you think you need a new PCM?
#3
The truck started running rough and so I took it to a mechanic. He said that there was no comunication between the computer and the engine. He unplugged the batteries to reset the computer and still no response. So after checking fuses and connections he came to the conclusion that the PCM was bad.
#4
I think you need a new mechanic personally. Probably threw a P0605, P1000, or something. Do you happen to know what codes?
Do you get a "Wait to Start" light?
100% sure all fuses are good? If the fuse for the cigarette lighter blows, a diagnostic scanner will not connect to the OBDII port, if the fuse for the Fuel bowl heater blows it kills the PCM relay.
If your truck was running I wouldn't start by replacing the PCM.
I would start with the under valve cover wiring harnesses only with the little tiny bit of info of "running rough". Or fuel pressure.
Welcome to FTE, please stick around, and we really will try to help and save money.
Do you get a "Wait to Start" light?
100% sure all fuses are good? If the fuse for the cigarette lighter blows, a diagnostic scanner will not connect to the OBDII port, if the fuse for the Fuel bowl heater blows it kills the PCM relay.
If your truck was running I wouldn't start by replacing the PCM.
I would start with the under valve cover wiring harnesses only with the little tiny bit of info of "running rough". Or fuel pressure.
Welcome to FTE, please stick around, and we really will try to help and save money.
#5
Thanks for the welcome,
The truck is not putting out any codes. He did check fuel pressure and that checked out ok. My wait to start is working fine. I will check all the fuses inside the truck because all of the fuses under the hood were fine. I know for a fact that my e-brake light comes on every other time I depress it so that fuse may be out or going out.
Thanks.
The truck is not putting out any codes. He did check fuel pressure and that checked out ok. My wait to start is working fine. I will check all the fuses inside the truck because all of the fuses under the hood were fine. I know for a fact that my e-brake light comes on every other time I depress it so that fuse may be out or going out.
Thanks.
#6
Thanks for the welcome,
The truck is not putting out any codes. He did check fuel pressure and that checked out ok. My wait to start is working fine. I will check all the fuses inside the truck because all of the fuses under the hood were fine. I know for a fact that my e-brake light comes on every other time I depress it so that fuse may be out or going out.
Thanks.
The truck is not putting out any codes. He did check fuel pressure and that checked out ok. My wait to start is working fine. I will check all the fuses inside the truck because all of the fuses under the hood were fine. I know for a fact that my e-brake light comes on every other time I depress it so that fuse may be out or going out.
Thanks.
I could be completely wrong trying to diagnose a bad PCM versus a "professional" mechanic, but you just really don't see many go bad and the truck still run...
#7
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#8
Well, we have replaced the PCM after it completely stopped running. It started but ran rough so we hooked it up too a diagnostic compuer and found that we now have signal from the PCM but the PCM does not comuincate with the IDM. We have checked all wiring connections and that checked out ok. We are now in the process of replacing the valve covers including the wire harness in hopes that the wires were fried. Once we put it back together tonight we will have more info. This has been a huge headache!!! I may ultimately have to change out the IDM?
#10
Still No Answers????
WOW!!!
Stiil no answers! Mechanic #2 is now giving up and has recomended another shop. He re-checked all fusses, all conections to the PCM, replaced the valve cover gaskets and wire harness on both sides, and had the CPM re-flashed and still the truck runs rough. He came to the conclusion that it is an electical problem because all mechanical components are functioning properly. If anyone out there has any input or ideas as to what direction I should head, I would be most grateful?
Stiil no answers! Mechanic #2 is now giving up and has recomended another shop. He re-checked all fusses, all conections to the PCM, replaced the valve cover gaskets and wire harness on both sides, and had the CPM re-flashed and still the truck runs rough. He came to the conclusion that it is an electical problem because all mechanical components are functioning properly. If anyone out there has any input or ideas as to what direction I should head, I would be most grateful?