All lights amp signals work fine, but on the.

Tiny
CARLSMILLER
  • 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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Monday, November 19th, 2012 AT 5:18 PM

4 Replies

Tiny
FAKHIR
  • MEMBER

Check out the dynemo, is that working good?

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Monday, November 19th, 2012 AT 5:25 PM
Tiny
KHLOW2008
  • EXPERT
  • 41,975 POSTS

Did you perform a charging test on the alternator and what are the readings?

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Monday, November 19th, 2012 AT 9:05 PM
Tiny
MECHANIC7
  • MEMBER

14.2v 40amps 60amps under load.

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Wednesday, July 30th, 2014 AT 3:49 PM
Tiny
MECHANIC7
  • MEMBER

I am replying because I have the exact same problem all except my radio works.

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Wednesday, July 30th, 2014 AT 3:50 PM

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