1991 Chevrolet Suburban Will Chevy 5 7 2500 Start Run Fifteen Seconds Stop

1991 CHEVROLET SUBURBAN
118,000 MILES
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DG2960
  • MEMBER
  • 1 POST
Why will a 1991 chevy suburban 5.7 2500 start and run for fifteen seconds and then stop? I have replaced the ecm, fuel pump module, fuel pump relay, and the ignition module. vehicle will lose power after fifteen seconds at the fuel pump.
Dec 27, 2012 at 4:13 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
what is the actual fuel pressure???

Roy
Dec 27, 2012 at 6:34 PM
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