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Idle surge at stops when motor is warm

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    #1

    Idle surge at stops when motor is warm

    I have been having this problem that once my cars warmed up or has been driven for like 10-15 minutes and I stop at a stop sign my car will surge idle down like 100rpms from where it was than jump back up to normal idle. The car does not jerk or anything when the idle does this so I figure it is not a vacuum leak. Because when I had a vacuum leak and I was a stop sign it would jerk like it was trying to drive. Plus I have checked all hoses.

    So i come to everyone asking for a diagnoses or ideas of things to check to solve my problem.

    It doesnt affect my car on how it drive or anything it just happen when im at a complete stop and my car is warm.

    Much appreciated,
    Bucky
    You don't have to like what he did, but I would hope that you can appreciate the time, money and love that went in to the build. If you can't, you're not really an enthusiast, just another dumb kid with a car.-visualpoet
    Money and Knowledge are never in the same sentence, because people with Money think they know it all, but people with knowledge, know better.-ragingasian
    Tags: None
    #2
    Clean your IACV

    1993 Honda Accord LX 2004-2009
    1996 Honda Civic LX 2009-2012
    2012 Kia Optima LX 2012-2013
    2010 Honda Accord EX-L V6 2013-2018
    2007 Honda Fit Sport 2017-2017
    2018 Honda Accord EX-L 2.0T 2018-20XX





    Comment

      #3
      I figured that was the culprit. But i tried deleting it, I had the plate and everything but once it was blocked off my car would turn on and shut right off. How do I fix that since there is a plug on it.
      You don't have to like what he did, but I would hope that you can appreciate the time, money and love that went in to the build. If you can't, you're not really an enthusiast, just another dumb kid with a car.-visualpoet
      Money and Knowledge are never in the same sentence, because people with Money think they know it all, but people with knowledge, know better.-ragingasian

      Comment

        #4
        X2 on the iac puls there might be air in the cooling system

        Comment

          #5
          well i thought that to but ive bleed the system and everytime i re-check it theres no air.

          so anyone know what to do to block off the iacv? i have the plate ready to go
          You don't have to like what he did, but I would hope that you can appreciate the time, money and love that went in to the build. If you can't, you're not really an enthusiast, just another dumb kid with a car.-visualpoet
          Money and Knowledge are never in the same sentence, because people with Money think they know it all, but people with knowledge, know better.-ragingasian

          Comment

            #6
            When there's a sticky thread entitled "Click Here FIRST! All the info you need!"
            You might want to give it a shot. The answer to your question is the very first link in that thread. I swear... I've linked to this thread 3 times today ALONE! People need to read.

            http://www.cb7tuner.com/vbb/showthread.php?t=48695






            Comment

              #7
              deev I knew about that ive read and searched ALOT. I have that valve deleted already. only reason I havent deleted the other one is because I cant figure out how to make the motor keep running after that plug is unplugged on the iac valve

              I mean I geuss I can try putting that valve back on and try cleaning the iac valve.. But I have tried this before.. and I still end up with the same results.
              You don't have to like what he did, but I would hope that you can appreciate the time, money and love that went in to the build. If you can't, you're not really an enthusiast, just another dumb kid with a car.-visualpoet
              Money and Knowledge are never in the same sentence, because people with Money think they know it all, but people with knowledge, know better.-ragingasian

              Comment

                #8
                FITV....

                I had the same problem and i cleaned the iac REALLY good. Im talking carb clean, Q-tips, toothpicks..the whole 9-yards. Worked for me.


                KeepinItClean | EnviousFilms | NoBigDeal | YET2BSCENE | .· ` ' / ·. | click here.
                Originally posted by Jarrett
                Is there a goal you're trying to accomplish besides looking dope as hell?

                Comment

                  #9
                  alright.. i geuss ill take the IAC valve off and clean it really good again and clean the FIT valve and stick it back on again.

                  well ill give it a shot again lets hope it works this time.

                  ill let you know in about 2 hours if it worked
                  You don't have to like what he did, but I would hope that you can appreciate the time, money and love that went in to the build. If you can't, you're not really an enthusiast, just another dumb kid with a car.-visualpoet
                  Money and Knowledge are never in the same sentence, because people with Money think they know it all, but people with knowledge, know better.-ragingasian

                  Comment

                    #10
                    iacv
                    R.I.P. Veronica - JDM F20A swapped 2.0 Si wannabe.

                    Comment

                      #11
                      I have the same problem as you man (running a H22A). Only when the engine is warm and when i come to a stop sign it starts acting up. Right now i just use the brake and gas at the same time with the right foot, keeping the idle steady. I still have to do what greencb7inkc did (clean the hell out of the IACV).

                      I heard and read if this doesn't work (and in most cases it does not) that a new IACV is in store. Please let me know how you make out. I recommend reading some guides on this just to make sure.
                      Last edited by Raf99; 11-25-2009, 03:35 PM.

                      Comment

                        #12
                        ok..well i put the IACV back on and it idle horrible surging ALL THE TIME now.. so im gonna take it off and live with the little 100 rpm jump that i had when i had the IACV deleted
                        You don't have to like what he did, but I would hope that you can appreciate the time, money and love that went in to the build. If you can't, you're not really an enthusiast, just another dumb kid with a car.-visualpoet
                        Money and Knowledge are never in the same sentence, because people with Money think they know it all, but people with knowledge, know better.-ragingasian

                        Comment

                          #13
                          back to this thread again. it hasnt done it so much lately but it does occur every once in awhile. heres two things i have came to the conclusion that i should ask to see if that what it is.

                          bad gas could cause this maybe?
                          and my thermostat being shot?
                          You don't have to like what he did, but I would hope that you can appreciate the time, money and love that went in to the build. If you can't, you're not really an enthusiast, just another dumb kid with a car.-visualpoet
                          Money and Knowledge are never in the same sentence, because people with Money think they know it all, but people with knowledge, know better.-ragingasian

                          Comment

                            #14
                            any ideas?

                            could it be the gas i get? because i always get it from the same place

                            or

                            could it be my thermostat thats not good anymore?
                            You don't have to like what he did, but I would hope that you can appreciate the time, money and love that went in to the build. If you can't, you're not really an enthusiast, just another dumb kid with a car.-visualpoet
                            Money and Knowledge are never in the same sentence, because people with Money think they know it all, but people with knowledge, know better.-ragingasian

                            Comment

                              #15
                              Originally posted by buckysaccord93 View Post
                              ok..well i put the IACV back on and it idle horrible surging ALL THE TIME now.. so im gonna take it off and live with the little 100 rpm jump that i had when i had the IACV deleted
                              if you take the plug sinsor off the back of your intake man thats closer to the passenger side and adjust your idlein screw you can get away with the ideing problem you will just have a check engine light on


                              life is as good as you make it. So forget what people say and do what makes you happy

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