Question about 2002 Ford F250 Super Duty SuperCab

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2002 ford f250 5.4L auto with OD wire chaffed. so i bought new shifter with wire replaced still does not work. all fuses are good. mechanic on here said instrument cluster is bad. i bought a new one for $1500 still not working. anyone know why?

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Hello, I believe I would hang onto the receipt for the new cluster, that's a pretty expensive guess if it is a wrong guess. In the future, for a part like a gauge cluster, there are both rebuilt Certified clusters and also Salvage parts from wrecks and disabled trucks. Would have needed to know if all gauges were dead.

You may only need a PCM Relay in the Powerbox or a PCM.. The PCM is the brain for the powertrain. Each Relay has several terminals within it and half could be burned out while the other half of the Relay can still work. The Relays are interlinked via the hard terminals on them and 1 burned out terminal can fail to trip another Relay and fail to switch it on.

The PCM is a programmable device. A temporary short can wipe the memory. The memory is wiped when you reprogram one anyway, so you need to have the PCM checked to see if it is blank. A process called "Reflashing" is done to put the new instructions back inside the PCM. If the old PCM will not communicate, the Relay for it may not be supplying power. If the PCM is receiving power, it may be blank or burned out.

I was told that Advance autoparts has more testing equipment that other major chains don't. So a bench check may help you. Sorry that your other solution from this site did not work yet. Fixya is all internet and I would not know the other mechanic to say anything about your case.

I hope my solution is very helpful and I would like to know if it was a Relay or not. Thanks for using Fixya.

You need a Repair shop capable of reading and "Reflashing" the PCM.

Posted on May 23, 2011


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