S10/T10 Blazer 2WD L4-119 1.9L VIN A 2-BBL (1984)
Intake Air Temperature Switch: Description and Operation
1984
The air temperature switch is a bi-metallic sensor used to provide the ECM with inlet air temperature data. When inlet air temperature is below the
sensor calibration point, the ECM overrides the ``Check Engine'' light caused by lean oxygen sensor error.
