What is the DC Voltage at idle between pins 1 and 2 of the Air Flow Sensor Potentiometer, with plug pulled off halfway?
It should be 0.6 to 0.7 VDC.
With plug disconnected, engine off, what are the resistance values between pin 1 and pin 2 at 0 deflection, 1-3 mm, 5 mm, 10 mm, etc?
Should start around 1K, ramping up to 9.5K as a linear function, and drop back down to 6-7K at W.O.T.
Cheers,
Mark