Alfa Romeo/Alfa Romeo Digest Archive

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Re: Fouling plugs, 84 Spider



I think you pretty much called it.  The AFM (Air Flow Meter) relies on the O2
sensor.  The AFM regulates the amount of air that comes into the Throttle body
based on readings the ECM gets from the O2 sensor.  If your O2 sensor is
faulty, chances are the ECM is overcompensating and causing a rich mixture.
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