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99cherokee alternator/voltage regulator need help

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Old 10-07-2009, 06:24 PM
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Default 99cherokee alternator/voltage regulator need help
is the voltage regulator in the alternator or in the computer? i have a 99 if that makes any difference
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Old 10-07-2009, 06:30 PM
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Computer, what is your issue?
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Old 10-07-2009, 06:33 PM
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its having low voltage, i have a new battery and my alternator is faairley new, so i fugured is was my voltage regulator, i got it tested and it was and the guy tried to tell me it was im my alternator but i thoutht it was in the computer
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Old 10-07-2009, 06:36 PM
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Start simple, check the output on you Alt. What is it?
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Old 10-07-2009, 06:39 PM
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pretty low i cant remember what is was, all i wanna know is the regulator external, or internal in the alternator?
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Old 10-07-2009, 06:43 PM
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Its in the PCM.
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Old 10-07-2009, 06:46 PM
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so would i need a new PCM?
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Old 10-07-2009, 06:52 PM
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It depends on how much you want to troubleshoot. Check all of your grounds and run it and do a "wiggle" test.
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Old 10-07-2009, 06:54 PM
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Do you have under drive pulleys?
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Old 10-07-2009, 06:58 PM
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Have you actually tested voltage off/ and with the engine running at the battery? If you are going just by the gauge inside, DONT
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Old 10-07-2009, 07:02 PM
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no i got it tested
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Old 10-07-2009, 07:03 PM
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Originally Posted by MulishaXJman
Do you have under drive pulleys?

what does underdrive puleys mean?
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Old 10-07-2009, 07:04 PM
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tested? That doesn't matter man. Metm is right do that.
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Old 10-07-2009, 07:10 PM
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check the field connections at the alt. they are the two small wires not the larg 10g one. if they are not good or have any corrosion
it can give you low volts
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Old 10-07-2009, 07:15 PM
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good luck. Let me know what you find.
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