1991 Chevy S-10 windshield washer pump

1991 CHEVROLET S-10
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Electrical problem
1991 Chevy S-10 6 cyl Four Wheel Drive 155.52 miles

my washer pump works sometimes,i checked for power at the pump both with a test light and a volt meter test light lights and volt meter jumps between 11.5 and 6.5 volts when i turn the switch on.if i put 12v to the pump it works.
thanks i hope you can help me with this. tom
Dec 2, 2009 at 10:44 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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