V10 Problem
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...............As for the maintenance, the prior owner kept a log, which is with the vehicle. I know of every fuel up, oil change, tire rotation & replacement and all work done on the vehicle. But the vehicle is 800 miles from me, so the log is not available to me........
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That number comes back as: PCM calibration code AE01, hardware type MTC-301
It has been replaced with the XF3C-AYC, code AE02, which has been replaced with the XU2A-AA calibration code JIR0.
So, any of these will work:
XF3C-AYB (calibration AE01)
XF3C-AYC (calibration AE02)
XU2A-AA (calibration JIR0)
car-part.com (junkyard search) shows more than 100 in the country for JUST the AYB version. More than 50 for the AYC and around 30-40 for the XU2A-AA version.
Prices are around $75 (around the lowest I've seen on Ford PCMs) up to $125, lowest is $55.
If you were to find another PCM with the hardware type MTC-301, (another V10 of course), you could have the right calibration downloaded into the PCM, but that would cost close to what a junkyard usually wants for the correct computer.
I REALLY think you should get the truck checked by a competent mechanic, although again, that might cost more than buying a junkyard computer and slapping it in yourself.
I would check both banks, check the red wire at the COP for +12V with a voltmeter connected to the red wire from one cop on each bank, to ground, with the KEY ON. Then, and only then, if you have voltage at both banks, check for signal from the PCM to the COP. You need to hook the volt meter to the two wires going to one of the COPs, put the voltmeter on AC volts and with the engine running, check it.
With the V10 and the way it's setup, the PCM controls each PCM individually. It usually doesn't take out one entire bank. The +12V supply, which doesn't go through the PCM, there's one on one bank, one on the other.
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Krewat,
Thanks for the assistance. I would try it if I had the truck with me.
Here is just one blurb that I have on the computer.
Specific to Japanese & Ford MFD OBD-I (1990-94) & OBD-II (1995-99) ECMs:
Thanks for the assistance. I would try it if I had the truck with me.
Here is just one blurb that I have on the computer.
Specific to Japanese & Ford MFD OBD-I (1990-94) & OBD-II (1995-99) ECMs:
<B><BIG>If your model car fits the category listed, there is a high probability that you will need to replace your ECM eventually.</BIG></B>
<B><BIG>Between 1985-1999, engineers manufactured Electronic Control Modules ECMs with great design and precision. One problem has been revealed over the years: some of the components that were used have shown a tendency to fail, especially by heat. The heat from the normal operation of the current in the unit and the heat from the environment the ECM unit is stored in. Some models are stored in the cab which can reach temperatures of up to 140f. Some models are stored in the engine compartment which is the worse possible environment for a computer processor. The engine compartment is exposed to the elements of the environment outside and the engines operating environment. Normal operations can adversely affect the ECM unit over time as well. Components such as the ECS, the ISC, TPS, engine sensor, alternator or failing batteries can adversely affect the unit. Reversing polarity when jump starting vehicle can damage the ECM.</BIG></B>
The most prominent candidates for failure are those installed during the 1985 through 1999 model years with 60,000 or more miles. It is also true that hotter climates contribute to increased failure probability. In other words, the Southern States: Texas, Florida, Georgia, and even Hawaii, have a higher number of failures than the Northern States.
<B><BIG>Between 1985-1999, engineers manufactured Electronic Control Modules ECMs with great design and precision. One problem has been revealed over the years: some of the components that were used have shown a tendency to fail, especially by heat. The heat from the normal operation of the current in the unit and the heat from the environment the ECM unit is stored in. Some models are stored in the cab which can reach temperatures of up to 140f. Some models are stored in the engine compartment which is the worse possible environment for a computer processor. The engine compartment is exposed to the elements of the environment outside and the engines operating environment. Normal operations can adversely affect the ECM unit over time as well. Components such as the ECS, the ISC, TPS, engine sensor, alternator or failing batteries can adversely affect the unit. Reversing polarity when jump starting vehicle can damage the ECM.</BIG></B>
The most prominent candidates for failure are those installed during the 1985 through 1999 model years with 60,000 or more miles. It is also true that hotter climates contribute to increased failure probability. In other words, the Southern States: Texas, Florida, Georgia, and even Hawaii, have a higher number of failures than the Northern States.
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That's a good read - the Superduty PCM is near the driver's left foot on the kick panel.
I had the O2 heater circuits fail last year on my '97 Cougar, with only 36K miles, but it's about 90% stop-and-go short-trip driving. I figure the thing had about 200K+ miles worth of O2 heater cycles.
I'd still question whether or not the PCM is at fault, or other wiring because, again, the PCM individually drives each COP, not one bank at a time.
I had the O2 heater circuits fail last year on my '97 Cougar, with only 36K miles, but it's about 90% stop-and-go short-trip driving. I figure the thing had about 200K+ miles worth of O2 heater cycles.
I'd still question whether or not the PCM is at fault, or other wiring because, again, the PCM individually drives each COP, not one bank at a time.
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Right now I am seriously considering towing the truck home (350 miles) and modifying the motor with PI heads, headers, better intake and a new computer. Basically make it a 2000-2004 motor with upgrades. My Suburban has been handling the load at this time but is too nice for the work I will be doing in the spring.
Thanks for the input. It would be alot easier if I could lay my hands on the vehicle. I haven't seen it since July.
Thanks for the input. It would be alot easier if I could lay my hands on the vehicle. I haven't seen it since July.
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