The proportion of air to fuel by weight in the mixture drawn into the engine.
A friction material on the clutch disc.
A sensor that works by a negative coefficient thermistor, which loses resistance as its temperature goes up just like the intake air temperature sensor. When the computer applies it's a 5 V reference signal to the sensor, this voltage is reduced through a ground circuit by an amount corresponding to thetemperature of the engine coolant.
A mechanical or electricallydriven propeller that draws or pushes air through the radiator, condenser, heater core or evaporator core.