4th replaced fuel pump won't come on

1999 BUICK CENTURY
150,000 MILES • 6 CYL • 2WD • AUTOMATIC
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FARMER'S DAUGHTER
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  • 1 POST
1999 Buick Century Custom V-6 3.1 Litre 2 Wheel Drive ---
fuel pump measuring only about 5 volts and not coming on....any suggestions, please?
Jan 8, 2011 at 4:30 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
The fuel pump relay has a "prime" terminal coming off it. You can apply 12v to it to see if that gets you 12v at the pump. that will isolate the bad part of the circuit.
Jan 8, 2011 at 5:10 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check and test the fuel pump relay, the computer control of the FP relay circuit and the fuel pump and oil pressure sending unit-
Jan 8, 2011 at 5:12 PM
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