Thanks Alan
I see the importance of a live test because I have a truck that since we got it has a completely random once in awhile rpm stick at 2100. No codes present and all sensors apear to be working so the dealers scanner says. I have to take live data when it is happening so I can see which sensor is stuck at whatever voltage. The dealer wants alot now to road test again with scanner doing live data, They allready got $260 for some diagnostic scanning, which shows nothing so they said start with replacing the TPS which they did. Thank goodness the dealer we bought the truck from paid for it. I have to pay for the rest. Next is the IAC so they say, but they really don't know until they road test and take live data. I bought an IAC but really see the importance for live data test or atleast freeze frame data logging.
Thanks again.
Kevin