Cranks but no start

Discussion in 'V8 - Maintenance & Troubleshooting' started by Pablo sho, Nov 12, 2019.

  1. Pablo sho

    Pablo sho SHO Member

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    My 96 sho will not start this morning. Cranks over great but that's it. It's been running good but idle was surging a little yesterday. Sorry I have not hooked a code reader up yet or done much research. It's been a busy morning.
     
  2. luigisho

    luigisho SHO Member

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    What if's could be long list. Codes first.
     
  3. E1

    E1 Crash Tested

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    Cam position Sensor or Crank Position Sensor.

    Also, 96's are cranky bitches. Try undoing the positive battery cable for a minute and reinstalling it, then try restart.
     
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  4. Pablo sho

    Pablo sho SHO Member

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    No new codes just the 411 code that's always there. I will try unhooking battery and check fuses.
     
  5. Pablo sho

    Pablo sho SHO Member

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    I unhooked and rebooked battery. No change. Its unhooked for the night now. It sprays fuel out the fuel line but I dont have a pressure guage.
     
  6. luigisho

    luigisho SHO Member

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    I'm surprised that no start has no codes. I agree the most likely is sensor failure. Could be a few things but that is where I would look. However, easy for me to say throw parts at something that I don't have to pay for.
     
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  7. E1

    E1 Crash Tested

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    Crank Position Sensor will not throw a code.

    Have you tried cycling the key 3 or 4 times yet?
    Turn the key to just before crank position, let pump run for a few seconds, turn off. Repeat a couple times, this builplds pressure in the fuel rail if fuel pump anti-backflow valve is faulty.
     
  8. Pablo sho

    Pablo sho SHO Member

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    I don't have much time to play with it but I did cycle the key several times. My truck tranny is malfunctioning now too. Back to driving the geo I guess..the has guage doesn't work right. I will probably ad some but there should be plenty. Only 175 miles on that tank. Maybe they didnt get it full. Hmmm.
     
  9. gamefanatic

    gamefanatic SHO Member

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    You may want to check for a stuck IAC. It won't necessarily provide a code, but if you push the gas just a bit and the car starts, that's an indication.
     
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  10. Pablo sho

    Pablo sho SHO Member

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    I think the IAC was acting up. I held it to the floor and tried starting. I will try just a little throttle. Thank you
     
  11. Pablo sho

    Pablo sho SHO Member

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    I think the IAC was acting up. I held it to the floor and tried starting. I will try just a little throttle. Thank you
     
  12. Pablo sho

    Pablo sho SHO Member

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    I think the IAC was acting up. I held it to the floor and tried starting. I will try just a little throttle. Thank you
     
  13. Pablo sho

    Pablo sho SHO Member

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    I think the IAC was acting up. I held it to the floor and tried starting. I will try just a little throttle. Thank you
     
  14. Pablo sho

    Pablo sho SHO Member

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    Sorry for multi post.
    I tried throttle in many positions and still no fire.
     
  15. SHOMON

    SHOMON 95 MTX Supporting Member

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    I wish I still had my Geo Prism to drive when the SHO needs work...
     
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  16. Pablo sho

    Pablo sho SHO Member

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  17. E1

    E1 Crash Tested

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    Holding gas pedal to the floor during cranking cuts off the fuel injectors, if you were not aware of this.
     
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  18. Pablo sho

    Pablo sho SHO Member

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    No I wasnt. Remembered it working on a differant car so i tried it.
     
  19. stephen newberg

    stephen newberg Moderator Staff Member

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    I also think there is a very reasonable chance it is the IAC with those symptoms. Take it out, clean it very gently with rubbing alcohol and a cotton swab, and then try it again. Or just replace it. They are not hugely expensive.

    pax, smn
     
  20. Pablo sho

    Pablo sho SHO Member

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    Thanks. I will have to research it. I might be able to do at least that much but I have had a out enough working on this thing.
     
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