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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
Mine is a 4x4 5 speed manual. how do I know what computer is the correct one? There is alot of 94 cpus on ebay at the moment. What part number does the guy you went through need?
The part number is on your computer. Pull the kick panel off on the passenger side, its printed on the PCM case. Your truck being a 94 has california emissions standard. Some 93s had Calif emmisions and PCMs from those will work, but make sure the one you get supports california emmisions. 91 and 92s have much different pin assignments and I am 95% sure they will not work. You can use a computer from an automatic truck, but you will get codes for the shift solenoids not being hooked up, this is an easy fix. The fuel mapping is slightly different but I don't think you will notice it much. I am putting a 5 speed into one of my trucks that was auto.
In the junkyard find an Explorer with EGR and you will know its got Calif emmisions. A 93-94 4.0 Ranger may work and I understand that 95 4.0 Explorers are identical to the 94, but run the part numbers through the dealer and make sure first.
Well I was playing around and I got more codes. I think it was a 45 and a 61 or 66. Both were ignition stuff. I ran the meter to the ignition coil like the book said and I think it is bad? the secondary resistance is not right. And I think the first is incorrect too but not by much. They are both too high. I came in for lunch but I am going to go back out and see if I am still getting spark.
Will the Crankshaft position sensor stop it from starting? I tested mine looking for the pulse while it was cranking on the voltmeter and I saw no pulsating. It would move once and stay untill it was done cranking. Is this a failure?
It will cause a no-start. What do you mean you meter "stays"? Your meter may not be able to see the individual on/off pulses and it will make an average reading. You need an ocilloscope to see the actual waveform. I think if you are reading any voltage on the sense wire, then the sensor is probably ok.
The sensor works by induction. The PCM sends it a voltage. The sensor creates a magnetic field. Every time a notch on the crank damper crosses that field, a current is induced on another wire that goes back to the PCM.
If you are not getting a code for it, I would assume its good. I can't get to the first post form this screen, your truck is a 94, right? I think you should be getting 3 digit codes i could be wrong, its been a long time since i read them on my ex. Run your codes one more time and write down what you get.
