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5.9 cummins question

Discussion in '1982-Present GM Diesel' started by colbystephens, May 4, 2006.

  1. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    ok so i'm helping these people out with their old school bus and here's their problem - i don't know the answer. anyone got any ideas?

    everything i ever hear about diesels makes me think this should be the other way around.
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Solenoid heats up and then stops working...happens to 6.2's as well.

    Rene
     
  3. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    hmmm. sounds like i need a shop manual and a new solenoid.
     
  4. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    so is that a solenoid problem or does the heat need redirection?
     
  5. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    all i know about that quote is what was emailed to me. hmmm. can you elaborate a bit more? i don't really understand your post.
     
  6. CrewCab59

    CrewCab59 1/2 ton status

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    Not knowing what engine he has ,if it's a 5.9 B" I would check that fuel shutoff,just pull up the plunger ,wire up and test .Those go bad from time to time.

    CrewCab59
     
  7. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    ok, so as it turns out i have new info about their engine, which is not a 5.9 as they had originally told me. :) it's a 6 cylinder 8.3.

    anyone have anythoughts about how to fix this?
     
  8. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    well, i just reread what they wrote to me, and i think i might need more info from them - i don't think a starter would have a piston in it which allowed fuel to flow. he must be referring to the fuel solenoid, not the starter.
     
  9. CrewCab59

    CrewCab59 1/2 ton status

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    Not the starter!
    Try the fuel solenoid .You can just pull up the plunger and try to start it ,if it starts then its a fuel solenoid. (check for power and grounds)

    CrewCab59
     
  10. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    yeah, that's what cummins told them. it works to pull the plunger up and start it, but he wants the problem fixed. does this mean replacing the solenoid?
     
  11. CrewCab59

    CrewCab59 1/2 ton status

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    As long as you have your power and grounds, Yes replace the solenoid!

    CrewCab59
     
  12. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    i wish i didn't suck w/ electrical stuff. can someone walk me thru checking the ground? i think it has power since it works when the engine is cold.
     
  13. 79k20350

    79k20350 3/4 ton status

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    clean up the ground, to make sure its a good connection. OR if you have a tester you can do a continuity test.
     

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