I've recently had a dead battery along with that my clocks stopping working then the engine electrical fault light come on? I've replaced battery and clocks with the hope that the light would go off but it's not and car fan still comes on when ignition is turned on along with runing lumpy for about 3 minutes still, I've had the car hooked up on code reader but no faults showing on two different readers?? Could this be IAC valve? MAF? Or ECU problem any ideas peeps cheers