1998 Chevy Suburban fuel pump

Tiny
BIGZ
  • MEMBER
  • 1998 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
Have a short and it keeps taking my fuel pump out. Question is I ran a separate power to fuel pump and bypassed the fuel pump relay, truck cranks rite up seems to run OK, but when driving down the road it spits and sputters would that cause the pcm or computer to make the truck run crappy?
Monday, December 7th, 2009 AT 4:07 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, Your system shows to have an oil pressure switch in the fuel pump circuit, wired in parallel to the relay. As long as that circuit is functional, you can unplug the relay, the vehicle should still start and run. If I know a short is on a long wiring circuit, I don't hunt the short, I clip the wire at both ends and splice in a new wire. That will work, if no branches off the circuit. I wouldn't think your rewiring would cause your issue, can't be sure?
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Monday, December 7th, 2009 AT 10:45 AM

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