This 2003 Ford Expedition came in with the complaint that the alternator had been replaced twice and the charge light light indicator was still coming on. The shop that had installed the alternators had called in desperation as their customer was becoming quite upset. They also stated that the light may stay out all day or only about an hour. When their customer showed up with the vehicle I was a little surprised. The shop usually sends vehicle on a flat bed and drops them off. Time to try and make everybody happy (except Me) while the customer waits(I was trying to eat lunch). I did a quick visual inspection of the wiring at the alternator and everything looked okay. I checked codes and found a code P0620 stored (alternator problem). I then looked at the wiring leading to the alternator and I saw this telltale sign. A wire with discoloration against a metal object.
The metal object in this case was the a/c low pressure or suction line that runs along the lower edge of the battery. I lifted the wiring up and could tell from the amount of discoloration that I might have found the problem.
Yep there’s the problem. I removed some more tape. Wrapped the damaged wire. Rewrapped the harness.
Installed some split loom and cleared the codes. Rechecked the system and all was okay. Back to my lunch.
Yes they can. Two things to consider though. Have you tested them to confirm 100% that they are blown? If they are blown have you located and corrected the condition that damaged them?
Sparky, this might be a dumb question but, can the 2 fusible links in the harness be replaced..
Main battery power is supplied through two fusible links in the wiring harness, near the battery. Power is supplied to the orange/light blue wire from fuse number 9 in the interior fuse box,located behind the right kick panel. The other two wires are communication circuits between the alternator and PCM.
Having the same issue with my 03 EB expedition. checked Alternator and battery both checked ok. took to dealer and they claim that alternator isn’t getting power. please help
It sounds more like you have a faulty alternator. I would start with having it checked first.