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Help! ECM-B keeps popping

Discussion in 'The Garage' started by 91GMCSuburban, Aug 6, 2005.

  1. 91GMCSuburban

    91GMCSuburban 1/2 ton status

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    what the hell!

    I have replaced the fuel pump relay, had all wires checked for shorting, replaced a loose tilt steering column. I hit a bump on the street and pop!

    What could I be missing? Could it be the fuel pump itself? Could it be the ECM? I'm grasping here, help
     
  2. k20

    k20 3/4 ton status

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    could be the pump. I had a pump lockup and it kept blowing it.
     
  3. 91GMCSuburban

    91GMCSuburban 1/2 ton status

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    Yeah, but it could do it cold or hot. Its when I hit a major bump.
     
  4. wildbilzrydn

    wildbilzrydn 1/2 ton status

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    Sounds like the power to the fuel pump is grounding out when you hit the bump. Check for wires rubbing sharp edges and such.
     
  5. 91GMCSuburban

    91GMCSuburban 1/2 ton status

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    Although I had someone check this out, I will check again.

    If any other ideas, let me know.
     

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