Ford EEC-IV C3P3 Computer post-repair testing video

Robert's C3P3 testing after pcm repair

[@keatyofficial]

i’ve got a ranger and i have codes on it, im able to pull codes and all, but im getting map sensor out of self test range, and throttle position sensor low voltage, im not sure if i could tell if its the computer or the wiring or not. needing help

[@dragradialperformance3540]

Both of those codes indicate there's a problem with the voltage on those sensors, probably voltage too low. Usually, that means there's a broken wire. That TPS sensor should have one wire with 5v on it (key on), one wire with 1 volt (the signal wire is about a volt at idle), and one wire that's a good ground. Test all 3 to see which of those wires is not correct. That will lead you to the cause of that code, and it's likely the other sensor has the same problem source. While it could be a PCM issue, I doubt it is.

[@AliAli-hm2np]

Would you please help me to recognise this ECU if its for manual transmission or automatic its X0X ( F0ZF-12AF06 )

[@dragradialperformance3540]

I don't have any information about an XOX or X0X calibration. What is the part#? (xxxx-12A650-xx)?

[@AliAli-hm2np]

F0ZF-12A650-CA

[@dragradialperformance3540]

@@AliAli-hm2np From what I can tell, this is a 1990 Ford Mustang computer for sure. And I think it's a 5.0L export model, possibly for an automatic transmission. I've heard this computer doesn't use any oxygen sensors at all, and runs in open loop. It would have been for models exported outside of the USA, such as Saudi Arabia.

[@AliAli-hm2np]

Yeah it is in Saudi Arabia but are you sure i dosent run o2 sensor

[@AliAli-hm2np]

I did install o2 sensor and connect it yo it