My battery light had been coming on intermittently. Then it stayed on. Was only getting 11 volts at the posts. It has a new battery with clean connections.
I had the charging system tested at the parts store and it said the voltage regulator is bad and alternator is good. But in my prior experience when a voltage regulator goes bad it just goes bad. After sitting for a couple days the battery light is off again and getting 14.3 volts.
It is possible for the voltage regulator to be this intermittent?
All the wiring appears to be ok. no corrosion by the pcm or the fusible link near the battery. I even shook the wiring back and forth but no battery light. Seems like the voltage isn't staying low for long enough to turn the light on. But you know it will when I'm half way to work and its only 3 degree's outside. I really just need more of a confirmation from you all with more experience with these systems that this is most likely the PCM.
Last edited by 4wheelduck; 01-02-2015 at 09:17 AM.
Reason: grammatical errors
brushes in the alternator are probably getting worn and sticky.
happens to many of them. they quit working, give em a tap, they work for a while, then quit again.
usually the pcm would not be intermittent. except maybe for bad grounds, but i'd think you'd have other slight glitches as well then.