Mechanics

ISUZU NPR BATTERY PROBLEM

2001 Isuzu NPR • 290,000 miles

All lights & signals work fine, but on the dash; the brake, brake booster, abs and battery lights remain on. The heat/air does not blow when turned on, and the radio does not work. The battery seems to be strong and they're not that old (2 months). The smaller 2 prong fuses are all ok. All the large fuses are good (that I can find), the alt. Is charging, al the lights will go out and everything works fine if I am going 50-55 mph or race the eng. Fairly high. Wat could it be?
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Carlsmiller
November 19, 2012.




Check out the dynemo, is that working good?
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Tiny
Fakhir
Nov 19, 2012.
Did you perform a charging test on the alternator and what are the readings?

KHLow2008
Nov 19, 2012.
14.2v 40amps 60amps under load.

Tiny
Mechanic7
Jul 30, 2014.
I am replying because I have the exact same problem all except my radio works.

Tiny
Mechanic7
Jul 30, 2014.

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