High Altitude COMPENSATOR (HAC)
The HAC senses barometric pressure and when the air density is low, sends a signal to the ECM. The ECM controls the mixture control solenoid in the carburetor to compensate for the rich air/fuel mixture condition.
The HAC senses barometric pressure and when the air density is low, sends a signal to the ECM. The ECM controls the mixture control solenoid in the carburetor to compensate for the rich air/fuel mixture condition.