Mechanics

CHEVROLET SILVERADO ALTERNATOR PROBLEM

1990 Chevrolet Silverado • 126,000 miles

I have a 1990 chevy silverado with a 5.7 v8 and every time I turn the blinkers on my alternator gauge pulses and when I turn on the heater the gauge drops and when I use the headlights I replaced the battery and alternator I can't figure it out
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Guest
January 23, 2013.



Have the alternator re tested as it sounds like it is failing under a load.

Roy

ASEMaster6371
Jan 23, 2013.