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What is the voltages reading at fuel pump when.
1994 GMC SAFARI
What is the voltages reading at fuel pump when is running?
Friday, November 16th, 2012 AT 7:22 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.
Friday, November 16th, 2012 AT 7:52 PM
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