BigE, the power drop occurs after each trip of the sensor. The KS is a one reset sensor. Turn the truck off, it resets. Turn it on and go a few miles and boom, it trips. Then it retards timing and bypasses the blower and gets REALLY bad mileage. The only fix is to replace it. My only question is, could something like a bearing noise from the nose gear on the blower trip the sensor? I've noticed this on mine. I just don't know what comes first. The nose gear noise or sensor trip. If the gear is noisy all the time I could see it tripping the sensor or if the sensor trips and bypass occurs, is the bypass causing the noise?