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Gauge lights flicker 200 1992

posted by  scorron on  Sun Mar 16 19:59 CST 2014
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last visit: Tue Oct 7 21:10 CST 2014
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Noticed the past few weeks that my gauge illumination lights flicker at lower RPMs (not the warning indicator lamps). The behavior is the same with load from headlights, electric fan, and blower motor as it is when all those things are off. I have not noticed a flicker in my headlights, but can't swear it's not there.

I tested the voltage at the alternator output at 14.7v; 13.5v with the heaviest load I could muster from car accessories.

Tested voltage with the AC setting on my meter to find .2v ripple at the alternator. Would this cause the flickering gauge lights?

I am used to the tell-tale sign of a faintly flickering battery light, but have never noticed my gauge cluster illumination flickering. I recently cleaned and tightened all the contacts on the back of my gauge cluster in an attempt to fix it: no luck.

Any clues?








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    Gauge lights flicker 200 1992

    posted by  trichard on  Mon Mar 17 04:59 CST 2014
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    last visit: Fri Oct 24 05:52 CST 2014
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    i think your voltage regulator is failing despite the readings you are getting.

    in fact imo 14.7 volts is bit high and indicative of a failing diode on the regulator.

    change it

    traditionally the VR seeks to maintain voltage well below 15 volts which is the start of burning off your battery acid. 14.7 is already too high







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