Hunting Idle/Idle Surge? This Could Be Why (05-09 Mustang GT Throttle Body Teardown and Diagnosis)

If your 2005–2009 Mustang GT has a hunting idle, idle surge, or throws the wrench light, this video shows you why. I break down the throttle body, show you how to check for worn gears, and explain why this causes idle instability and codes like P2104 and P2110. Perfect for diagnosing BBK or OEM throttle bodies before you buy a new one. Basically I open the throttle body to find the reason for the rising and falling idle. I’ve replaced it back to the stock throttle body due to this, this is what you can do ahead of time to see if this is why your idle rpm’s goes up and down. I also show you how to properly connect, read and adjust the voltage.