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High Idle

Discussion in 'General Tech and Maintenance' started by khai_tuan_nguyen, Jun 29, 2005.

  1. khai_tuan_nguyen

    khai_tuan_nguyen Senior Member

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    My friend asked me to help him fix his high idle on his swap. He swapped a obd2b gsr into his obd1 95 civic si. He has a high idle at 2500. I just needed some troubleshooting help for this swap into this car. Are there plugs that are the same that can be plugged in the wrong plugs and cause a high idle?

    I am going to check vacummn lines, coolant bleeding etc.

    But are there some things I can check and get out of the way. Like unplug this and if this happens than it is bad if not than it is good etc.

    Could a bad TPS sensor cause high idles?

    Thanks in advance
     
  2. pissedoffsol

    pissedoffsol RETIRED

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    check the idle screw on the TB. could have worked its way out during shipping.
     
  3. khai_tuan_nguyen

    khai_tuan_nguyen Senior Member

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    When the car idles at 2500 it is steady. I tried adjusting the TB screw, but it does nothing, so I tried looking for a vacummn leak and found nothing. When I took the MAP sensor off the idle went down, but was sparatic.

    could the TPS sensor cause it to idle that way?
     
  4. xj0hnx

    xj0hnx I wanna be sedated VIP

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    If the idle is steady, have a look at the throttle cable, it might be too short or twisted and holding the plate open.
     
  5. khai_tuan_nguyen

    khai_tuan_nguyen Senior Member

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    there is quite a bit of slack on it so it should be ok, right? It is a GSR cable in a 95 si hatch.
     
  6. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    Yeah you should be okay...i have the same problem as you, and it didnt change when i took the throttle cable off. I am seeing this little gold bold on the TB, and im willing to be if i dropped it a little bit the idle would drop too. If anyone knows how to adjust it, i would appreciate hearing from them.
     
  7. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    What about a FPR. Do you think that would help at all, or is it more likely there is a vacuum leak?
     
  8. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    [​IMG]

    How do you adjust that screw, cause i know it changes the throttle position, and it will let my engine idle lower.
     
  9. noobvang

    noobvang Senior Member

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    Check the Idle Air Controler, could be bad or dirty. Pull it out and spray it with some brake cleaner and let dry first, then try it again.
     
  10. allbottledup

    allbottledup Senior Member

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    i had the same problem with my old hatch. Ended up being the cable got hooked under the brake res. As soon as i moved it idle went back to normal
     
  11. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    i can guarentee that is not the case here. its resting on the idle screw.
     
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