• Tiny
  • jimbo48039
  • 1990 Jeep Wagoneer

Electrical problem
1990 Jeep Wagoneer V8 Four Wheel Drive Automatic

i have a 1990 jeep wagoneer that wont charge the alt. Is good I have had checked, there seems to be no external reg. And it wont charge. Is there a computer or something else that allows the charging to work? It will dis charge when lights are turned on but wont charge? Help me Thank you, Jim

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have the same problem?
Wednesday, May 19th, 2010 AT 8:42 AM

1 Reply

  • Tiny
  • hmac300
  • Expert
  • 44,895 posts

The voltage regulator is internal on the alternator. If it won't charge then your wiring may have a broken piece in it or a fusible link. The links are usuall y found by the starter and it's a smaller wire going to a larger one. It could have shorted and burnt causing the battery to not get a charge. A pro can put a guage on the cable to see if is charging as well as a volt meter on the battery. If this has a 2 wire going to it- a large one and small one, check the small one to see if it has power it's the exciter for the alternator and should have soemthing going through it.

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Thursday, June 3rd, 2010 AT 3:09 PM

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