Question about 1983 Pontiac Grand Prix

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1987 Isuzu Trooper fuel, alternator, brake warning lights stay on

I have a 1987 Isuzu Trooper on which the fuel, alternator, and the brake warning lights remain lit when the engine is running. I have replaced the alternator and the battery, but the lights remain lit.

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  • izzbo1 Mar 30, 2009

    I have the same problem intermittantly. When the warning lights are on, my tester says the alternator is only charging @ 11 volts. When they go off, my tester says it is charging at 14 volts. What the heck?! I am afraid to drive this thing for fear of getting stuck with a dead battery again, but this is my only vehicle. I am pretty handy with a wrench, I just need to be pointed in the right direction.

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Hi Guys,

Have you finally sorted your problems. I think it might be a faulty alternator on its way out.

Could you please be kind to let me know. I have the same problem and just need to be sure of what to do.

Cheers guys

Posted on Nov 26, 2009

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