You know how many times i put a funnel on my head at work after I solved a car problem.Tom Terrific! Few understood until I explained the C.K.connection dumb greasemonkeys!LOL Not now you need a degree in computer science to fix or diagnose some of these headaches!Thats where those diagnostc analyzers come in, they used to cost several thousands ,but you can get them now small and very portable and hook them up to a laptop computer.