Mechanics

CHEVROLET SILVERADO ALTERNATOR PROBLEM

1990 Chevrolet Silverado • 126,000 miles

Hi I have a 1990 chevy pickup and when I turn my blinkers on my alternator gauge pulses with the blink and when I turn my head lights on the gauge drops and when I turn on the heater the gauge drops I replaced the battery and alternator with a power master 140 amp alternator I have no clue what it is please help
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Guest
January 29, 2013.



I think what your seeing is normal. I like to see voltmeter over 13 volts with everything turned on.

JDL
Jan 29, 2013.