Julio- I emailed you but maybe you didn't see it. I pressed the test button and motor didn't bog. Dial was set at 1/2 way. LED came on the dash. Wires checked fine, getting about 5 volts from TPS to MAP, all grounds look good. Then when I turned the dial 3/4 it sprayed. Also, when I turn the dial all the way to the left, up to 1/4 from the left, motor doesn't bog but LED comes on. Any suggestions? I started to get suspicious because I heard knock and knock gauge went into yellow about a week ago. It only happened once, and I didn't notice if the led came on the dash or not. I would ASSume the pump didn't spray, however.