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1989 Chevy Suburban fuel pump

Tiny
JBERGMAN
  • MEMBER
  • 1989 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 168,000 MILES
I am not getting enough power to the fuel pump/fuel pump relay has been changed and the fuel pump is new and works with a direct wire to the battery
Friday, September 10th, 2010 AT 7:44 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi jbergman, Welcome to 2carpros and TY for the donation

What is the present voltage at the fuel pump connector-let me know
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Friday, September 10th, 2010 AT 8:08 PM
Tiny
JBERGMAN
  • MEMBER
  • 3 POSTS
I am not sure I bought a multimeter but I can't figure out how to use it but the tester light is dimmer than if you test any other wire in the truck
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Saturday, September 11th, 2010 AT 11:08 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Set the meter to VDC at 20 scale and probe the power wire with the red lead and black to good ground
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Saturday, September 11th, 2010 AT 11:12 AM
Tiny
JBERGMAN
  • MEMBER
  • 3 POSTS
8.35
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Saturday, September 11th, 2010 AT 11:45 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Disconnect the oil pressure switch and read the voltage again on the fuel pump connector-what is it? And also at the oil pressure switch
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Saturday, September 11th, 2010 AT 6:21 PM

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