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Tired of the high idle

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    #1

    Tired of the high idle

    I got a cb7 m/t, my idle is way to high and is causing it to hiccup, currently i'm running w/o my IACV to keep steady, I changed the IACV and the fast idle and still having the same issue, i took off hte whole plenum and cleaned everything with TB cleaner, cleaned TB IACV, Fast idle adjusted the fast idle and checked for vacuum leaks, and also closed completely the valve in the TB..... What else could it be?
    Tags: None
    #2
    did you try taking the idle down by screwing the idle adjustment screw in?

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      #3
      Originally posted by jdmjunky View Post
      did you try taking the idle down by screwing the idle adjustment screw in?
      i think i have the same problem too when my engine is cold. but its surging from 1500 rpm- 2000 rpm.

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        #4
        TW sensor... worth checking




        HONDAMENTALISM

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          #5
          Originally posted by paulhenrick2k8 View Post
          i think i have the same problem too when my engine is cold. but its surging from 1500 rpm- 2000 rpm.
          Yeah mine dose the same thing when cold, but mine will do it from like 500rpm - 2200rpm. It SOMETIMES can be caused by not changing your oil. I think thats why mine is acting up. Im 400milles over dew on my change. Also happens yo my buddy’s h23 vtec his motor tells him by how it idles when he needs to chance his oil...it's kinda weird.
          R.I.P Rex 10/10/97-08/06/09
          There aren’t enough words in this world to say how much you will be missed. love you buddy!

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            #6
            The screw in the TB is completely in, and what is the TW sensor?

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              #7
              Originally posted by flcb7 View Post
              Yeah mine dose the same thing when cold, but mine will do it from like 500rpm - 2200rpm. It SOMETIMES can be caused by not changing your oil. I think thats why mine is acting up. Im 400milles over dew on my change. Also happens yo my buddy’s h23 vtec his motor tells him by how it idles when he needs to chance his oil...it's kinda weird.
              it also happens to me even i already changed the oil.. it's been like that since i bought the car. it's just annoying that i need to warm it up for 5 mins. so its not gonna surge.

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                #8
                TW sensor is the coolant temp. sensor. Could be sending a bad signal to compouter which then compensates with air/fuel mix, causing bad idling.
                Costs some $70 at Honda (maybe cheaper in US)




                HONDAMENTALISM

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                  #9
                  Originally posted by JGTC View Post
                  The screw in the TB is completely in
                  Good job on messing up your idle.

                  Clean your fast idle thermo valve and make sure the plastic ring is tight.
                  wat?

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                    #10
                    everything is cleaned and replaced on the plenum except the tb and still have the same issue.

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                      #11
                      bump

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