High idle after afm and icv cleaning - **FIXED** SEE LAST POST

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  • amcink
    Mod Crazy
    • Jan 2012
    • 788

    #16
    Originally posted by dnguyen1963
    Have you tried to wiggle the elbow going into the throttle body? Every time someone tries to clean the ICV, he/she always manages to make that connection loose.
    Yeah that thing is thight

    Comment

    • AlphaE
      E30 Addict
      • Sep 2011
      • 503

      #17
      only difference from before you did the work and now is that you created a vacumm leak..
      This morning= before you messed w it= no vacumm leak=ran normal
      Now=after you messed w it= vacumm leak= runs like pooh

      the odds of messing something up the actual idle valve are slim to none i would think.

      SMOKE IT!!
      Now with 2.7i power!!!

      Comment

      • amcink
        Mod Crazy
        • Jan 2012
        • 788

        #18
        Ok just smoke it with some marlboro and that thing is thigh nothing came out. And the car still fluctuate between 1k to 1.5k. I unplug the ICV while it was running and it revs up to 2k and then keeps goes back and forth. I believe i mess up the ICV. Any thoughts?

        Comment

        • dnguyen1963
          R3VLimited
          • Nov 2011
          • 2648

          #19
          You need to keep the pressure between 2-4 psi if you want to find vacuum leaks.

          Comment

          • amcink
            Mod Crazy
            • Jan 2012
            • 788

            #20
            Originally posted by dnguyen1963
            You need to keep the pressure between 2-4 psi if you want to find vacuum leaks.
            I was able to get smoke smoke out of the hole on the elbow where the idle control valve goes (since i used the hose from the elbow to the icv to blow smoke. So it did a full circle

            Comment

            • FLG
              No R3VLimiter
              • Sep 2011
              • 3165

              #21
              Originally posted by dnguyen1963
              You need to keep the pressure between 2-4 psi if you want to find vacuum leaks.
              Again..

              You need it done right.

              Sent from my Galaxy Nexus using Tapatalk 2
              -Build http://www.r3vlimited.com/board/showthread.php?t=295277

              Comment

              • amcink
                Mod Crazy
                • Jan 2012
                • 788

                #22
                Found a great article on how to test the idle system. I will follow it and see what i found.

                Comment

                • amcink
                  Mod Crazy
                  • Jan 2012
                  • 788

                  #23
                  **FIXED**

                  Ok, So i follow the ICV section of the above link. I test the ohms and it was fine.

                  Then i took the ICV off again and did a better job on cleaning it. It seems that my ICV was full of gunk and my first try of cleaning created a problem since i did not took out all the gunk out and the gunk that was left keep the ICV from closing; therefore creating a vacuum so the continuous surge of the idle.

                  After a through cleaning and carefully turning the inside of the ICV (to try to hit all the areas and clean out all the gunk) I test it by plugging back the electrical plug to the 2 prongs but not installing the hoses; then turning the key to the 1st position and verifying that the ICV inside closes properly (I did this few times to make sure it was closing properly). Finally I install all back and started the car and the idle is at 900 with out any surge. I also adjusted a little the screw on the ICV to manage the air flow and everything is working fine at this time. Idle is perfect at 900 and the car sound great.

                  UPDATE - ok ICV was gone i clean it too much that the computer could not control it. It was idling at 900 the creep to 1200 and the started oscillating again. I got one from a fanatic. Did a quick clean and install it. Idle is perfect. So make sure you use carb cleaner and NOT break cleaner and never a wd40.
                  Last edited by amcink; 11-19-2012, 09:27 PM.

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