1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

extremely erratic idle

Discussion in 'General Tech and Maintenance' started by evilgsr, Aug 4, 2004.

  1. evilgsr

    evilgsr Member

    Messages:
    64
    Likes Received:
    0
    Joined:
    Mar 7, 2004
    Well once again my integra is sick. This time it seems to be the idle but i can't put my finger on what exactly is causing it, i'll be sitting with the car in neutral and the idle will jump from under 100 rpms (on the edge of death) to above 400 which is still a little to low for me; it will do this back and forth and back and forth, when its not bouncing back and forth the idle will stay extremely low. Ive tried simply turning the screw on the throttle body but it seems to hav no effect on it whatsoever, though when i unplug the idle control valve the car idles perfectly at 1000 rpms. My hanes manual tells me to unplug the icv and then adjust the idle with the screw but ive also heard you have to jump the ecu or turning the screw will have no effect; so i suppose basically what im asking is how exactly do i properly adjust my idle and is this problem attributed to my idle control valve or anything else of that nature (if it makes any difference i have a lighter flywheel which is known to make the car idle low but it has progressively developed a rougher and lower idle, also lately the car will barely start or not start at all on the first try) any help is greatly appreciated
     
  2. ScrapinSi

    ScrapinSi Senior Member

    Messages:
    3,292
    Likes Received:
    4
    Joined:
    Feb 27, 2003
    could be a clogged iacv...

    The correct way to adjust it, is screw the set screw in until the car barely idles. Then unplug the iacv, and set the idle from there. Then turn the car off, plug the IACV back in, and reset the ecu if necessary.
     
  3. evilgsr

    evilgsr Member

    Messages:
    64
    Likes Received:
    0
    Joined:
    Mar 7, 2004
    how could i clean it i mean would some carb cleaner and a toothbrush work or is it more complicated than that???
     
  4. seks727

    seks727 Junior Member

    Messages:
    1
    Likes Received:
    0
    Joined:
    Jul 19, 2004
    sorry to jack, but just disconnecting the conector to the IACV or actually unmounting it from the manifold? reason I ask is when I disconnect the connector going to the IACV the car dies.
     
  5. philsir

    philsir Junior Member

    Messages:
    3
    Likes Received:
    0
    Joined:
    Aug 5, 2006
    I Have Also A Problem On My B16a Sir 2 On My Idle ,that Swap On My 00 Civic Dx Auto Tranny ,it Look Like The Iacv Is Not Working I Did The Wire Pinout That Was Show On The Iacv 3 Wire To 2 Wire Fix But Still The Same ,by The Way Im Using The 93 Integra Auto Tranny And The P2e Automatic Ecu ,icant Use The P30 Ecu Auto Coz Is Not Shifting ,im Still Using The Dx Harness We Just Put The Apexi 2 Vtec Controller To Make The Vtec Work .the Car Is Running With This Set Up But The Idle Is Going Up To 1300 Rpm When The Ac Is Not On And When It On And The Engine Is Cold When I Put In D4 The Idle Drop To 550rpm Is Anybody Can Help On My Problem Thanks
     
  6. D See 2

    D See 2 Senior Member

    Messages:
    2,405
    Likes Received:
    0
    Joined:
    Sep 29, 2002
    Location:
    Baltimore, MD
    With the IACV unplugged, the motor should idle at 650 rpm.
     
  7. MikeBergy

    MikeBergy Blah blah blah....

    Messages:
    3,646
    Likes Received:
    1
    Joined:
    Oct 9, 2003
    Location:
    Central Coast, CALI
  8. Lymitliss

    Lymitliss New Member

    Messages:
    4
    Likes Received:
    0
    Joined:
    Aug 19, 2006
    Whenever my CRX's idle shoots up and down, it's because it's low on water.
     
  9. GQMarques

    GQMarques GQMarquesâ„¢

    Messages:
    41
    Likes Received:
    0
    Joined:
    Nov 5, 2006
    Location:
    Hawaii
    Ok my problems seems to relate in some ways, but a few differences... My 95 civic ex idles two seconds up and two seconds down. I don't have a tach on my car due to theft =/ so I can't tell you exactly. the idle doesn't seem to cause me any problems now, but i'm sure it will in the future. I disconnected my AC belt and Power Steering and also have a smaller/lighter crankshaft pulley a long time ago but the idling is more recient. Problem only comes up every now and then but how can I fix this before it gets worse? ... ooh and I reciently replaced my throttle cable too if that makes a difference.
     
Verification:
Draft saved Draft deleted

Share This Page