i just replace the intercooler pump and was wanting to verify that it was going to come on, should it come on with the key on?, will it stay on for a few seconds after you shut the engine off, regardless of how lond its been running?

Start the car, and rev to 3500 rmp for a few.....it will start the pump....

let it run for a few, then turn it off. You will hear it run for a couple of seconds after shut-off.

Stick your head down by the passanger side front wheel well and you'll hear it for a good 10 seconds after the car is shut off. Sounds kind of like the fan running in your computer.

put power directly to it..... if it dosent run, its no good....
its in front of the passenger front wheel and behind the pass/front fog light..