Re: Fouling plugs, 84 Spider

[Keith Walker <100662.3423@domain.elided>]

>>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.<<

The AFM does not regulate the amount of air. It measures the amount of air
that flows, and the throttle body regulates it. However, beyond a certain
throttle opening the AFM is likely to be open fully, at which point the
injection runs off a predetermined map.

The Bosch injection system with an AFM works happily without an 02 probe
in many cars, such as the Europeam spec GTV6 and 75.

The O2 sensor just provides a small element of feedback.

All the best

Keith
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