Speed Density Air Flow Meter

The computer looks at the air fuel ratio from the o2 sensor and corrects the fuel delivery.

Speed density air flow meter.

Mass airflow with a speed density system actual intake manifold pressure is now measured using a manifold absolute pressure map sensor as well as inlet air temperature iat. Engine coolant temperature sensor. Mike stowe mustang mass air conversion in this document i will outline the steps to convert a speed density mustang to the maf system. I am generating this because i felt the documentation i had to work with could be improved.

Cylinder head temperature gauge. Install the injector maf o2 sensor and power wires from the new conversion harness into their pin positions in the connector. A mass air flow air flow meter speed density primer. Automatic transmission speed sensor.

Pull the wire and pin out and then install into the pin slot as directed. The conversion to mass air calls for moving certain existing wires to new locations. Since air density changes with air temperature an intake manifold mounted sensor is also used. Speed density systems count on air pressure as opposed to air flow and engine speed rpm to compute fuel delivery.

When one reads about mass air flow sensor contamination it is important to recognize that a modern engine can use one of five distinct categories of air measuring devices each of which works on very different physics principles. Always double check the pin number per the diagram above. The maf sensor is located somewhere in the intake stream typically away from sharp bends and typically at least 8 10 inches away from the throttle body however these rules are not always followed. Production based speed density computers also utilize an oxygen o2 sensor mounted in the exhaust tract.

Air flow and mass sensing devices air flow and mass sensing devices. Also known as a manifold absolute pressure map system the ecu uses air pressure data and engine rpm to determine engine airflow which in turn is used to calculate how much fuel to send into the cylinders. Converting your speed density 5 0 mustang to mass air flow system author. Brake fluid pressure sensor.