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Thread: Intermittent misfire Opel Astra 01, 1.6, 16V

  
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    angryumpire's Avatar
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    Intermittent misfire Opel Astra 01, 1.6, 16V

    The problem has occured for over 2yrs, and Opel have no idea what the problem is, no fault codes showing on the diagnostic checks.
    Car being driven at 2-2500 rpm in 3,4 or 5th, occasionally a violent misfire occurs, its as though the ignition is being switched on and off and engine loses power, dip the clutch and rev the engine, and its OK until the next time. If I dip the clutch and keep it in, the engine dies on me and if I drop the clutch in the engine fires up OK but the A/C starts blowing air out at the same temp. as the heater on cool, A/C switch still on. If I turn ignition off and restart the engine, the A/C comes in OK.
    Car has done 42K from new, problem started at 33K.
    Replaced to date: Ignition Module/ Plugs/Crank Sensor/Engine Temp. Sensor/Fuel Pump & Filter/EGR Valve/Stepper Motor cleaned and refitted.
    Hope its not the ECU.
    Any ideas, Thanks

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    MonkeeBoy's Avatar
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    think it might just need either a good long drive, or once the car is wamred ip drive more spiritly give it some beans and see if that clears anything

    as for the ac stuff... i've no idea sorry
    >>Diary<< Status: ...........Slow and Steady.... may update more often...
    Last Updated: 27/10/2014

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    angryumpire's Avatar
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    Problem finally solved by a small one man band workshop. It was the EGR carboned up,removed, cleaned and put back on, no problems since.
    Only fitted a new EGR valve 2.5 years ago no one ever suspected this was the problem.
    Car only done 12,000 kms in this period, short runs almost certainly caused the valve to carbon up.
    The problem on the A/C was a faulty compressor, repaired for £35.00

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    nry's Avatar
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    Classic EGR valve symptoms Glad it is working again!

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    benhavenhand19's Avatar
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    what was the problem with your a/c compressor? mine sounds really rough when cold starting and then after its warm its quieter but can still hear that the compressor is a bit rough? like a failed bearing sounds

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