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300ce idle dip

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by B1GCC, Jun 14, 2009.

  1. B1GCC

    B1GCC Guest

    evening all!!

    does anybody elses 4 speed automatic mercedes do this?

    after starting engine and driving off, then comming gto a junction or traffic lifts, leaving car in drive, the idle dips to 500rpm and almost cuts out!!! odd i know!!

    my haynes manual isnt particularly clear as to where the idle screw is....

    so i pose the question What is going on?!?!?!
     
  2. roofless

    roofless Senior Member

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    Your Mercedes:
    w124 e220 estate
    could be a vacuum leak ...check the vac pipes & regeneration valve
     
  3. meanie

    meanie Senior Member

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    Oxon
    Check co%.
    It doesn't have an idle screw-remove idle valve & clean out with carb/brake cleaner.
     
  4. OP
    B1GCC

    B1GCC Guest

    thanks for your suggestions i shall attempt these when the rain goes :)
     

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