When the "check engine" light came on in my truck again, it turned out to be the throttle position sensor just like when I very first bought the truck about a year-and-a-half ago. That time, I was able to fix it by spraying contact cleaner on it, but this time that didn't work. I ordered a new part. In this episode I talk while I replace the part and I also talk about the nifty diagnostic tool that I used to get the trouble code and how it sends the information to your smartphone.
What you can gather with the torque diagnostic tool for Android:
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