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Charging system not working

Tiny
MULDOON
  • MEMBER
  • 1995 JEEP GRAND CHEROKEE
  • 180 MILES
I have a 6 cyl 4 litre 1995 jeep grand cherokee laredo with 174k miles the car runs great but just dies when idyling with radio, A/C, lights, on at night, I put new fuel filter, IAC module, coil pack, new battery, any suggestions? Jeep dies when idlying when lights, radio, a/c on at night.
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Monday, March 12th, 2012 AT 12:05 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,864 POSTS
Start with a load test on the charging system. Sounds like you have one bad diode. "Ripple" will be very high and the most output you'll get with a bad diode is one third of its rated capacity. That means you'll only be able to get 25 - 30 amps from the common 90 amp alternator.
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Monday, March 12th, 2012 AT 1:43 PM

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