Question about 1997 Jeep Grand Cherokee

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Won't Start Without Boosting

My truck won't start without having it boosted. Once it's running the battery gauge on the dash goes and stays at 19V. I'm able to disconnect the battery when the truck is running but still the gauge reads 19V. I have checked voltage across the battery and alternater and iboth are normal. Could this be an electrical short? Where do I start in troubleshooting?

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I think you need to have the battery tested, most parts store will do this for nothing, the charging system needs the battery in the circuit to work correctly, also a shorted cell in the battery will cause high charging voltages.

Posted on Sep 05, 2008

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