Fuel to air ratio on 1994 Mazda B2300

Which sensor regulates the fuel/air mix and how much does it cost?

by in Gastonia, NC on June 24, 2009
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1 answer
ANSWER by , June 24, 2009
The mass air flow meter or a MAP sensor (Manifold Absolute Pressure sensor )measures air flowing into the engine and the computer makes calculations for fuel based on this reading. The Air/fuel ratio sensor or Oxygen sensor measures oxygen in the exhaust to determine combustion efficiency and tailors the air fuel ratio depending on this value. The airflow meter is about $350 from the dealer, the upstream O2 sensor is under $100.