The intercooler pump is there to pump coolant through a air charge cooler located under your super charger, but above the intake. In line it is actually after the air filters but BEFORE the super charger. After the supercharger, the air goes directly into the intake runners. As the air goes into the engine, the Air Charge Cooler is supposed to cool the air down PRIOR to entering the super charger so that more air will fit in the cylinders and allow a richer fuel mixture and also not overheat the supercharger itself. This in turn allows more horsepower to be generated.

If the intercooler pump is faulty or not running correctly (i.e. - not pumping fluid constantly) then the intake air temperature will become too high and the engine will reduce power to save both the super charger and the engine itself from damage.

Hope that helps... the above pictures are directly from the downloadable SRT6 service manual. Use the search in Adobe's PDF reader to find "Charge Air Cooler".

Cheers!