Alternator swap 4 pin 2pin
- Thread starter Heldju
- Start date
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NoReverseYukon
Full Access Member
You all had me worried that my 2-prong adapter wouldn't work so I just did a test. When idling, both batteries are receiving approx. 13.65 volts. That is at the lower limit, but it is at idle and the dual batteries must also affect the output.
I do get code P1638 every now and then, which is a fault in the generator f-terminal circuit, so it's not working exactly as it should.
I do get code P1638 every now and then, which is a fault in the generator f-terminal circuit, so it's not working exactly as it should.
NoReverseYukon
Full Access Member
Well, I put the old 130 amp alternator back in and now I get 14.7 volts from it. So @Rocket Man @exp500 were correct - these are not interchangeable, even with that adapter.
