WHAT IS THE VOLTAGES READING AT FUEL PUMP WHEN ...

1994 GMC Safari

Tiny

Anonymous

November, 16, 2012 AT 7:22 PM

What is the voltages reading at fuel pump when is running?

1 Answer

Tiny

JDL

November, 16, 2012 AT 7:52 PM

Probably around 13 and 1/2 volts. At key on, your systems get battery voltage. Engine running, the systems get alternator voltage. There is a difference.

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