just happened again..i just drove 1200 miles towing my honda, the next day i went to drive my truck and went a couple miles and dash lights came on the charge gauge was down. i had autozone test my alt and they said it was not charging so i installed a new alt and it still did nothing so i put in a reman pcm it went 2 miles looked like it was charging then charging stopped and lights came on...checked all wires, checked plugs, checked connections. i have huge wires coming off the alt 00 and battery cables from fuse box are 00 i have a separate fuse instead of inline alt fuse that is good, checked all fuses in engine compartment and in cab. i just learned about a batter temp sensor took that out and ohmed it i might try and bybass that. i dont jerry rig things like a lot i see on here my batter cable connections are all great no corrosion i have put time and money into the truck and maintain it i need to figure out what is going on to stop the pcm from charging??? any ideas please thank you
good question I did just put a new alt in and drove it 2 miles and it was charging and then it stopped... not sure how to test the 2 wire plug on the alt? ohm it? i have the battery out getting a nice charge and will take it to auto supply store and have them run a load test it is a really nice northstar $360 battery only a couple years old should be ok, i also took the battery temp sensor out not sure what the reading in ohms should be on that? any idea
Yeah I would try checking continuity/ohm at both the alternators main connection point and ground. In my OP sounds like a major power drain somewhere. Do you have any after market electrics on it? Not sure about temp sensor.
Take your truck back to Auto Zone and have them check the new alternator, just because a part is new does not mean that its good. I have had it happen to me.
so here are a couple things in the bottom left leak detection pump; is getting an error and on the right transmission control relay can someone look at this i am not getting any power to the alternator on the two wire plug i wonder if it is the plug these go to?
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