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99 2.2 swap with a 98 4300 vortec fuel pump not kicking on

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john h

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When you did your engine swap did you flash the electronics to the 99 vehicle --their are to many reasons for problem but with a swap its usually anti theft [which would cut fuel ]--and all different sensors which the 4800 has many not compatible with the 2.2 electronics

Posted on Sep 15, 2021

Testimonial: "The truck cranks just not getting fuel to motor changed relay and fuel pump"

  • 1 more comment 
  • Anonymous Sep 15, 2021

    The truck cranks just not getting fuel to motor changed relay and fuel pump"

  • john h Sep 15, 2021

    yes it cranks but if the electronics dont recognize the engine not going to start

  • Anonymous Sep 15, 2021

    How do u flash the electronics

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Mike Duffy

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Some 2.2s had a oil pressure switch in the fuel pressure relay circuit that would cut fuel if the oil pressure went low, You may be able to swap the switches.

Posted on Sep 15, 2021

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