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Old 04-13-2017, 09:40 AM
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99 Jeep charging problem

I have a 1999 Jeep Grand Cherokee Limited 4.0 inline 6 that has new alternator new computer new battery but still wants to charge at 19 20 volts all gauges lay flat at zero lights inside flicker when I unplug the PCM wires to the alternator everything runs fine until the battery is dead what could be the cause of the of this?

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Old 04-22-2017, 09:07 AM
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Re: 99 Jeep charging problem

It kinda sounds like the pcm needs reflashed or replaced. I would start there and take it to the dealer to reflashe the pcm and see if that helps if not there's a short in the pcm causing the issue.
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