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How To: Pull Trouble Codes on a 1st Gen Explorer (paperclip method)

Discussion in 'Stock 1991 - 1994 Explorers' started by doonze, October 3, 2009.

^^Searches ExplorerForum.com^^





  1. BrooklynBay

    BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

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  3. mr cribb

    mr cribb US Army Retired Elite Explorer

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    I got a code 117 a week or so back, so I swapped the sensor with one from my parts truck.

    No change. CEL is still on.

    117
    (O,M)
    ECT sensor is/was low or grounded - ECT

    What does ECT is/was grounded mean?

    I am out of town for a week, and I would like to know how to fix this.

    The wires to the sensor look like some insulation is missing, could this be the cause? Maybe the wires are getting in contact with each other?
     
  4. BrooklynBay

    BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

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  5. natenkiki2004

    natenkiki2004 Blue Bomb!

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    Last edited: November 24, 2015
  6. jd4242

    jd4242 Explorer Addict

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    To do the engine run test all i do is put the paper clip in and start it right away correct? ? Or do i need to wait till all the key on codes are shown??
     
  7. natenkiki2004

    natenkiki2004 Blue Bomb!

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    You can start it right away once the paperclip is in.
     
  8. jd4242

    jd4242 Explorer Addict

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    Thats what i thought..mine absolutely wont start with the clip in...

    It goes in same spot as key on,engine off test correct
     
  9. natenkiki2004

    natenkiki2004 Blue Bomb!

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    Correct, nothing changes. The computer detects ground on the output of the test wire and enters test mode. In this case, you're grounding through the check engine light which illuminates with pulses from the test output. Make sure you have the right pins in the right connector, but I doubt you screwed that up.
     
  10. jd4242

    jd4242 Explorer Addict

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    Yea im getting the regular codes fine,it just wont start..i probably got other issues keeping it from starting im guessing but as soon as i pull the clip it will start right up
     
  11. natenkiki2004

    natenkiki2004 Blue Bomb!

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    It doesn't crank or won't fire? If it's just not cranking then I'd cheat and jump the starter solenoid. If the computer is outputting KOEO codes, jumping the solenoid should start and run the engine since the computer is alive and just waiting for a crank signal.
     
  12. jd4242

    jd4242 Explorer Addict

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    Its cranking
     
  13. natenkiki2004

    natenkiki2004 Blue Bomb!

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    What are you missing then? You should still get the fuel pump prime in the KOEO test, make sure you have that. If so, check for spark. I've never seen this issue reported anywhere so it does sound like you have some kind of short.
     
  14. jd4242

    jd4242 Explorer Addict

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    Idk honestly. .should mention im doing this on my SCT chipped ranger..
     

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