DIY 02 Ford Rough Idle Diagnosis With a Twist! Pt1

02 Ford Expedition with a rough idle and hesitation/stumble on acceleration. Seems like this would involve a simple, basic diagnostic strategy but things go way south right from the very start!
Want to learn how to do computer and electrical auto diagnostics? Visit my website at www.schrodingersboxqm.com for basic training!

Part 2 of this series can be found here: https://www.youtube.com/watch?v=UzZHXxFgDnU

rough idleLTFTSTFT