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  1. 159 2.4jtdm ruff idle at 90�c

    Alfa 159, Brera & 946 Spider
    159 2.4jtdm ruff idle at 90°c I've just bought a 2007 2.4 jtdm and now discovered it had a hidden fault. When the car water temperature hits 90°c the revs on idle start to jump slightly. The car drives perfectly fine the rest of the time only ever happens at 90°c on idle. Has anyone else...