1996 GMC Safari Stalls and Backfires

1996 GMC SAFARI
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JAGSJORGE
  • MEMBER
  • 1 POST
what can be wrong? I currently changed the gas pump that is all i have done to it and yesterday i was in the freeway going around 60 mph and it wanted to turn off but instead there was some sort of explosion in the exhaust and fire came out. any help will be greatly appreciated. thanks
Apr 15, 2006 at 6:26 AM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
If you have a Vortec engine I suspect the fuel pressure regulator. Sadly it is a part of the injector system that is under the intake manifod and a bit pricy. I hope I am wrong but the backfire is a lean condition. Good luck
Apr 15, 2006 at 10:45 AM
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Suggested Repair

If the engine is a Vortec, inspect the fuel pressure regulator, which is part of the injector assembly under the intake manifold. The exhaust backfire is consistent with a lean condition.

Conversation Summary

A 1996 GMC Safari stalls randomly when stopping. After a fuel pump replacement, it nearly stalled at highway speed and backfired with flame from the exhaust. The expert suspects a fuel pressure regulator on a Vortec engine and notes that the backfire indicates a lean condition.

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