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  1. #1

    Angry Temporary dip in power and then cuts out when stopped

    Hi guys.

    Bit of help needed. Smart 450 coupe 2007 petrol.

    My wife does an 80 mile round trip to work. When driving down the motorway she has noticed a slight dip in power now and again only for a second or two then back to normal.
    Then when at some traffic lights it cut out when she stopped and then wouldn’t start for about a minute. (Turns over but won’t start) seems to only do it when cold up till about 15 minutes into journey and then fine. Very intermittent as i took it out today and didn’t do anything.
    Any help greatly appreciated and thank you in advance.

  2. #2
    Join Date
    Jun 2005
    Location
    Lewes, East Sussex
    Posts
    568

    Default Re: Temporary dip in power and then cuts out when stopped

    I would hazard a guess the the CPS need either a clean or erpacement.

    John

  3. #3

    Default Re: Temporary dip in power and then cuts out when stopped

    Thank you for your reply. is CPS clutch position sensor?

  4. #4
    Join Date
    Jun 2005
    Location
    Lewes, East Sussex
    Posts
    568

    Default Re: Temporary dip in power and then cuts out when stopped

    Crank position sensor

  5. #5

    Default Re: Temporary dip in power and then cuts out when stopped

    Thank you. At least I can start looking somewhere!

  6. #6
    Join Date
    Jul 2005
    Location
    over here
    Posts
    13,565

    Default Re: Temporary dip in power and then cuts out when stopped

    http://www.fq101.co.uk/how-to-guides...-sensor-change

    Could be , not perfect symptoms , but worth checking
    fq101.co.uk

  7. #7

    Default Re: Temporary dip in power and then cuts out when stopped

    UPDATE:

    Driving home from work this morning about 4 minutes in to journey and engine lost all power. Accelerator pedal doing nothing. Oil and battery warning light on dash. Came to stop, turned engine off. Started again fine and carried on journey without a problem!!

  8. #8
    Join Date
    Feb 2006
    Location
    Hampshire
    Posts
    1,075

    Default Re: Temporary dip in power and then cuts out when stopped

    Almost certainly Crank Position Sensor as outlined above.

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