Supercharger Intercooler (Charge Air Cooler) System
Intercooler system is designed to cool induction air which has been heated by the supercharger. Removing heat from pressurized air through an intercooler increases air density, which results in increased combustion efficiency, engine horsepower and torque.
Intercooler system consists of the following components: an additional radiator and coolant reservoir (independent from engine cooling system), an intercooler (charge air cooler) located in lower intake manifold and a charge air cooler pump (electric water pump) located at right front side of engine compartment and intercooler coolant hoses. See Fig 1.
Charge air cooler pump is controlled by PCM and charge air cooler pump relay to maintain a desirable intake air temperature signalled by a second intake air temperature sensor (IAT2) located in lower intake manifold.