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Thread: Engine management/emissions light!!!

  
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    Carl_1's Avatar
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    Angry Engine management/emissions light!!!

    Hi, I have an astra coupe turbo and just had the cam belt and water pump done at Vauxhall last Wednesday.

    The car was fine for a couple days but now the Exhaust Emissions light is flashing, then stays on and the car goes into limp mode! juddering and jerking.

    Do you think this could be down to something Vauxhall did or has something gone?

    I'm gonna take it into to them to hook it up to the tech2 and find the fault code but just thought id check before forking out around £50 for a diagnostics check.

    Any help would be appreciated.

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    zafgsi's Avatar
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    tech 2 sounds like a good idea but if it was me i'd go back and say "since you done the belt and waterpump, this light has come on".
    worth a try, just say it was fine before the work was done and you are not happy.
    no comment

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    Yeah thats what I'm gonna say. Well its pretty much the truth anyhow!

    Cool, cheers 4 the reply

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    Forget this thread! its the exhaust emissions light not the engine management!

    Sorry, please close.

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    still kinda the same tho, it was fine before
    no comment

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    Cam sensor might have failed or the cams could be out of timing....

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    It shouldn't be the cam senor as the zlet engine is very clever and will start reading it from the crank, when it does this it take a little while to start, as the above post said it could be two teeth out

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    If two teeth were out wouldn't this make the light come on straight away? rather than a day after the work was done?

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    If the belt or tensioner weren't installed correctly they may have allowed the belt to slip so the cams could have moved out of alignment when the tensioner took up the slack again. So the cams would now effectively be a couple of teeth out.

    Here's a simple "How Too" to check the cam timing....

    1.Ignition off and /or Disconnect Battery (Up to you but I always do both).

    2.Remove Spark Plugs (makes the engine MUCH easier to turn later on as you are not pushing against the compression of the pistons & theres no chance of the thing starting by accident).

    3. Jack up & remove the drivers side wheel

    4.Take off bottom plastic pulley cover

    5.Remove top Cam Belt cover

    6.To get Engine at Top Dead Centre TDC to align the timing marks, turn the bottom pulley clockwise with a socket on the bolt in the middle.

    7.IMPORTANT NOTE: NEVER, EVER TURN THE CRANK ANTI CLOCK WISE!! IF YOU GO TOO FAR, TURN CLOCKWISE ANOTHER TWO TURNS TILL YOU GET IT RIGHT!!!

    8.The cam pulleys each have timing marks on them and there are alignment marks on the cam cover behind.

    9.If one cam mark aligns but the other will not, then the cams are out of time.

    Hope it helps....

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