hard start&will not stay running

1994 GMC SUBURBAN
V8 • 2WD • AUTOMATIC
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LAJER
  • MEMBER
  • 1 POST
i have a1994 gmc sub 1500 it hard to start and when it starts some time it runs for a few min. other time have to keep foot on gas. fuel psi is 13,i changed plugs, dis cap, rotor, coil, egr,egr sol,pressure reg,pcv, map sen, can. purge sol, fuel pump relay,idle air contorl valve, iam lost as what could be wrong help please
Dec 3, 2010 at 2:44 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Do you have any fault codes? clear and re test, not all codes will set a fault light, do this and report your findings.

mark (mhpautos)
Dec 3, 2010 at 2:50 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the fuel pump and oil pressure sending unit this is the one that powers the fuel pump when the engine fires up
Dec 3, 2010 at 4:12 PM
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