w124 estate fuel cap not locking

Discussion in 'Electronics' started by mattc, Nov 1, 2008.

  1. mattc

    mattc Hardcore MB Enthusiast

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    as the title. thing does not lock (cannot hear it trying to do anything either).

    Pressing the red button down inside the load area makes it work (but this is stiff).

    The yellow pipe is connected. where should I be looking? Is it vaccum operated or electronic.

    Sorry if posted in wrong aread too:eek:
     
  2. scooter

    scooter Hardcore MB Enthusiast

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    it would possbly be the vaccum pump under the middle row drivers side passenger seat it has prob disconnected
     
  3. OP
    OP
    mattc

    mattc Hardcore MB Enthusiast

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    will have a look - typical its just getting dark!
     
  4. andy_k

    andy_k MB Club Veteran

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    my guess is that the black plastic thing with the red button on will be knackered - they are a five minute £20 (approx) job to replace - they normally make a whistling sound for a few days before they fail

    Andy
     
  5. OP
    OP
    mattc

    mattc Hardcore MB Enthusiast

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    Andy; is that the actuator? the £20 is that new or from the scrappie?
     
  6. OP
    OP
    mattc

    mattc Hardcore MB Enthusiast

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    Lifted the seats and no access cuts in the carpet:mad: which i am sure i have seen on other 124s. Does this mean i have to remove the seats to lift the carpet just to check? I could slit the carpet but am worried about damaging anything that I cannot see which might behidden underneath.
     
  7. andy_k

    andy_k MB Club Veteran

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    the actuator/lock release thing - £20 is the dealer price (it may be less - £14.99 rings a bell from when I changed ours) I wouldn't get6 one from a scrappie, they are too prone to failure
     
  8. OP
    OP
    mattc

    mattc Hardcore MB Enthusiast

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    Anyone know if there is more than one type of actuator? Thinking about it can I swap mine from the coupe (which works) for the estate one. this would save me lifting the bloody carpets just to check the connection
     
  9. andy_k

    andy_k MB Club Veteran

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    same part as far as I know - there is a clip on the back and it just lifts off
     
  10. Smiley

    Smiley Hardcore MB Enthusiast

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    Have you checked that the pin that moves in and out to lock the cap is not just a bit corroded up and is stiff - squirt a bit of WD40 on it and then manually move it a few times from inside.
     
  11. bolide

    bolide Hardcore MB Enthusiast

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    In my experience it's always the vacuum actuator. They seem to seize in one position

    Nick Froome
    www.w124.co.uk
     
  12. OP
    OP
    mattc

    mattc Hardcore MB Enthusiast

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    andy nick you were right

    swapped the actuators over and mine worked fine in the estate - so time to find a new one.
     
  13. Ian B Walker

    Ian B Walker MB Club Veteran

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    I have a spare one (working) for you on your next visit.
     

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