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Old 07-19-2024, 07:37 PM
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Default Battery/alternator.

All,

I have a 1990 I've switched the alternator out twice.

problem: I disconnect the positive off the battery while car is running and the car dies.

I don't believe the alternator is charging the battery.

I get a voltage reading at the terminal on the alternator. I had a 96 alternator on think switching to a 90 alternator would fix the issue but it did not.

I get a voltage reading on the one of the plug wires the connect to the alternator.

question is is this common and I need to click on soon the ms3 pro. I can't find anything on this topic. I do believe the the alternator is internal controlled and not by the ECU.

is there something simple I am missing or is this a bigger issues.

I did check resistance touching the alternator casing and it appears good. All grounds are good.

any help is appreciated.

thank you.

Last edited by Sezgin; 07-19-2024 at 11:01 PM.
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Old 07-21-2024, 01:34 AM
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Default

Try using advance search. In the title use the word alternator.
There were many threads, including how to not blow them up and controlling with MS3
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