Mass Airflow Meter (LH-Jetronic)

This meter measures intake air mass. Measure sensor is a heated wire which is maintained at 250°F (120°C) warmer than intake air. Motronic or fuel injection ECU is able to calculate mass of intake air by measuring amount of current required to maintain wire temperature. When engine is turned off, any contaminants on wire is burned off by heating wire to greater than 1800°F (1000°C).