Vauxhall Dash warning light

Discussion in 'General Motoring' started by bill, Feb 22, 2004.

  1. bill

    bill Guest

    Astra N reg 1400cc petrol
    Hi, just wondering if you can help a light appeared on my friends dash
    oday - then the car started to run rough - so he stopped the car for ten
    minuites and then started on his journey - the light stayed off for a couple
    of miles and then came on again and the car started to run rough again. Once
    he got home and left it for a couple of hours the light is now not on and
    the cars running fine any ideas.

    bill, Feb 22, 2004
  2. bill

    mike Guest

    blimey, gives us a few good clues won't you!
    if it's the engine management light then i would suspect the on-board pc
    is detecting a fault somewhere & is (switching) going into 'get you home'
    the car wants a looking at.

    if it's any other light, then who knows?

    mike, Feb 23, 2004
  3. bill

    bill Guest

    Hi Mike
    its all I got from my friend, from what my friend explained its the engine
    management light though
    what does the engine mangement light look like? is it a picture of an
    engine! I drive a peugeot.

    bill, Feb 23, 2004
  4. bill

    malcolm Guest

    Usually the light is orange with a lightning streak through it, whereas the
    Peugeot has a letter K.
    The codes need pulling to find which sensor is on the way out.
    malcolm, Feb 23, 2004
  5. bill

    CapStick Guest

    Try spraying some carb cleaner down the MAF before paying out for any
    diagnostic test.
    CapStick, Feb 23, 2004
  6. bill

    malcolm Guest

    Is it a single, or multi point injection system?
    malcolm, Feb 24, 2004
  7. bill

    bill Guest


    bill, Feb 24, 2004
  8. bill

    malcolm Guest

    That rules out the air mass meter, because the cpi doesn't have one; it
    relies on MAP sensor technology. It would be worth checking to see if the
    vacuum pipe to the MAP is clear and that there aren't any cracks in it.
    Is the fault evident all of the time, or does it come and go? If it's the
    latter, it will most likely be a sensor on the blink...possibly the MAP
    (manifold absolute pressure).
    The MAP sensor is an analogue variety, and if you have a dvom, I can post
    the test procedure.
    malcolm, Feb 24, 2004
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