Does anyone know any reason why my scan tool wouldnt show the TPS voltage when I am in field service mode? I bought the scan tool to try to figure out why my car seems down on power. Everything else works on the scan tool and the car is not throwing any codes. Also, when I have heard alot of guys saying that there computer is pulling alot of timing out because of something with the knock sensor. What numbers are you going off of? The scan tool I have shows the advance numbers, what is the maximum advance you should get? Sorry about all these questions, but I just bought this scan tool, and I would like to get my car running a little quicker before I have to put it away for winter. Any thoughts?
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