Mechanics

I HAVE A 6 CYL 4 LITRE 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, THANK YOU DECLAN

1995 Jeep Grand Cherokee • 180 miles

Jeep dies when idlying when lights, radio, a/c on at night.
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Muldoon
March 12, 2012.



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.

Caradiodoc
Mar 12, 2012.