1991 Ford Ranger Supercab "check faulty voltage regulator pcm" Questions

voltage, it will overcharge the battery OR the alternator is faulty. If the alternator is spun and a 12volt current source is put on the field terminal, it should produce 14.5Volts and no more without

check. If you have a good fuse, have had the alternator bench tested and it tested out good, there is also 2 fuseable links in the wiring for the alternator. One of thos could be blown. You could have

check voltage on ground wire engine cranking? I can't rule out a faulty coil driver in pcm. It's possible your old coil pack damaged the coil driver in pcm? If that is the problem, hope it didn't hurt

...or short to voltage 4. The control unit software nedds updating 5. The PCM or ECM is faulty 6. The fuel mixture is lean 7. Faulty fuel pump, regulator or lines Note: The MAF is not mentioned as a ...

...Faulty intake air temperature (IAT) sensor Possible Solutions: Past experience indicates that the most likely solution is to replace the thermostat. However here are some suggestions on ...

...faulty. The Fusible Link between the alternator and the Starter Motor (which is also the same electrical point as the battery positive terminal is open. Use the diagram below and check the alternator ...

...faulty 2. Connector terminal damaged or corroded 3. Wire harness. Check for correct voltage, open, short to ground, short to voltage 4. Control unit software in need of updating 5. PCM or ECM faulty ...

...check engine light to flash. If it does not, PCM is faulty. Also, possible crank position sensor or cam position sensor failed. The PCM needs to verify a certain number of RPM before the fuel pump ...

...first thing to do is check for faulty/damaged wiring to the PCM. We had to back out the 2 screws in back of the pcm because they were shorting out the pcm, zip tie the connectors in with 24" zip

...faulty coil. Check mass air flow sensor . also sounds link Sounds like a bad clutch or pressure plate . this all needs to bne checked. if that year had a coil pack... it sounds like that is the issue ...