Billy - Typically you won't get any warning that your IC Cooling Pump is on the fritz with the exception of an unexplainable (but extremely noticeable) loss of horsepower from the SRT's supercharged engine. Then, when you least expect it, the power has returned, but only for a minute or so. When the clutch of the S/C keeps engaging/disengaging, the most common culprit is the overheating of the S/C which is normally caused by no coolant flowing through the inter-cooler because the pump has failed. Since this cooling system is basically separated from the engine coolant system (joined only at the overflow tank), you can continue to drive the car with no harm to the engine nor to the S/C, but you will have dramatically decreased HP. Those of us that have the supercharged Xfires really enjoy the ~330HP that a fully functioning SRT engine (or the SLK32 ) can deliver and we can pick up on the loss of H/P rather quickly

RL