Is a mystery Check Engine light driving you nuts? It could be a funky Oxygen (O2) sensor. Associate auto editor Ben Wojdyla puts his trusty F-150 on the lift at Pop Mech's Detroit garage to show you how to:

* Remove a rusted sensor
* Refresh the threads
* Install new part with anti-seize compound

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Who says you can't work on your own car anymore? Follow Popular Mechanics associate auto editor Ben Wojdyla as he leads viewers, step by step, through repairs, upgrades, and troubleshooting tips. Got car questions? Email Ben, and he may answer them on the show.