Question about 2000 Jeep Grand Cherokee

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2000 Jeep Grand Cherokee In'line 6 cyl.....Erratic guages... check guages light goes on, guages go off for 10 seconds, then back on. Speedometer jumps. Idiot lights sometimes come on for a few seconds then back off. Rough starting, but eventually starts and runs, but will not always hold idle. When guages are crazy, shifting is sometimes erratic.

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  • Anonymous Mar 12, 2014

    p1391 code, low alternator voltage, speedo guage goes crazy, runs rough

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This will be challenging to find ... If headlights dim or flicker too ... check battery terminals first. But I think it will be a large harness with quite a few wires on it ... Check ... for loose bulkhead connectors at the firewall ... and between the Engine and the body/firewall .... at the ECU .... you may also check for loose harness connectors at the fuse box. check for loose or corroded fuses ... especially if a cover is missing.
If I remember correctly this truck has 3 fuse panels in it. Check the manual

Posted on May 12, 2009

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