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engine 'hunting' on idle

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    engine 'hunting' on idle

    anyone else have this? Took the CSL for an MOT yesterday - had a good 20mins drive before, so was up to temperature etc. The engine is hunting on idle - it's always done this since i've had it and Gareth did something to it last year (reset something?) but it's still doing it. It had an inspection 2 at BMW approx 1500-2000 miles ago (May 2012) so needs an oil service in a couple of months. Would like to get this sorted at next service. Any clues as to what could be causing it?

    #2
    Turn the air con off and it'll go away, they all do it.

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      #3
      A/C wasn't on

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        #4
        Throttle position sensor?

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          #5
          There are a few pipes that connect into the bottom of the airbox, it's certainly worth checking if one of those has come loose.

          It sounds like it may be an air leak, worth having a spray round the intake system with a can of brake cleaner, see if the engine runs differently. Obviously dont spray the cleaner anywhere near the actual intake, or that will make it run differently!

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            #6
            thanks for the replies. Me being a bit of a hamfisted clumsy tw4t - I'm not safe to be around tools (banned in our house ), so i'll probably leave it till it's oil service. Good to have some insight into what it might be though.

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              #7
              doesn't it have a slight hunt even with the aircon off when the coolant fan starts or something.

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                #8
                My car has been idle hunting with the AC on. Is it that all CSls do it or just some?

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                  #9
                  :bigcry: Used to love 'hunting' sound!

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                    #10
                    Originally posted by 3wheels3 View Post
                    :bigcry: Used to love 'hunting' sound!
                    Feeling for you mate......








                    Over it now :whistle:

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                      #11
                      :bigcry: Ya go off lol but Also can nae believe I'm going to miss Assen!

                      #brokenheart #bestiesforever #CSLNation #imlost #Annushorribilis

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                        #12
                        Originally posted by 3wheels3 View Post
                        :bigcry: Ya go off lol but Also can nae believe I'm going to miss Assen!

                        #brokenheart #bestiesforever #CSLNation #imlost #Annushorribilis
                        wassamatter Ian ? you sold yours then ?

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                          #13
                          Fo sho! Like 8 months ago :bigcry:

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                            #14
                            Originally posted by 3wheels3 View Post
                            Fo sho! Like 8 months ago :bigcry:
                            at least you aren't regretting it like the others!

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                              #15
                              Originally posted by shimmy View Post
                              at least you aren't regretting it like the others!
                              :hahaha::hahaha:

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