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Thread: 2002 Mondeo Poor starting after short engine run

  1. #1
    Chris Whelan
    Guest Chris Whelan's Avatar

    Default 2002 Mondeo Poor starting after short engine run

    On Wed, 24 Nov 2010 12:36:02 +0000, David wrote:

    [...]

    > My Ford (2003 Focus) has had occasional starting difficulties since I
    > got it.


    What engine?

    > (BTW, it has two engine temperature sensors, a cylinder head temp
    > sensor, and a coolant temp sensor.)
    >
    > I thought it was fuel related, ie: leaky injector or fuel pressure
    > regulator, but yesterday it threw a P0340 code for the first time. This
    > code is 'camshaft position sensor circuit'. The car runs fine when
    > started, and is rarely tricky to start. Some more investigation is
    > required.
    >
    > David


    Lots of cars only need a valid signal from the crank sensor when
    starting, and essentially ignore it when running.

    If it was mine, I would clean up the connector for the sensor, spraying
    the connections with *proper* contact cleaner (NOT WD40 please!), clear
    the code and check after a week.

    Chris

    --
    Remove prejudice to reply.

  2. #2
    David
    Guest David's Avatar

    Default 2002 Mondeo Poor starting after short engine run

    On 24/11/2010 13:27, Chris Whelan wrote:
    > On Wed, 24 Nov 2010 12:36:02 +0000, David wrote:
    >
    > [...]
    >
    >> My Ford (2003 Focus) has had occasional starting difficulties since I
    >> got it.

    >
    > What engine?
    >
    >> (BTW, it has two engine temperature sensors, a cylinder head temp
    >> sensor, and a coolant temp sensor.)
    >>
    >> I thought it was fuel related, ie: leaky injector or fuel pressure
    >> regulator, but yesterday it threw a P0340 code for the first time. This
    >> code is 'camshaft position sensor circuit'. The car runs fine when
    >> started, and is rarely tricky to start. Some more investigation is
    >> required.
    >>
    >> David

    >
    > Lots of cars only need a valid signal from the crank sensor when
    > starting, and essentially ignore it when running.
    >
    > If it was mine, I would clean up the connector for the sensor, spraying
    > the connections with *proper* contact cleaner (NOT WD40 please!), clear
    > the code and check after a week.
    >
    > Chris
    >


    Thank you Chris, I was just giving the OP another route to follow.

    David

  3. #3
    Chris Whelan
    Guest Chris Whelan's Avatar

    Default 2002 Mondeo Poor starting after short engine run

    On Wed, 24 Nov 2010 13:27:49 +0000, Chris Whelan wrote:

    [...]
    > Lots of cars only need a valid signal from the crank sensor when
    > starting, and essentially ignore it when running.


    Doh!

    ....*cam* sensor..

    Chris

    --
    Remove prejudice to reply.

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