Well, most or all of us have our pumps boost activated. In normal driving, especially around town, the pump doesn't run very much. When we go to positive boost, the pump is just being powered, but is it running? I don't think you would want to go WOT with it not running but how do you know? If it is turned on manually, you can hear it running as soon as the ignition is turned on, so you know it is working. Mine was not working so I left it on for two days around town and now it is fine. I am just trying to give everyone a heads up on this. If your pump is not running, just take it off the truck and take the motor apart so that you can get to the shaft, lube that and you will be back up and running again!