P0506 IAC System RPM below expected (vacuum leak) - Ford

Anytime you have idle speed control related trouble codes (P0505, P0506, P0507) the first thing you want to look for is a vacuum leak. Many idle air control valves, solenoids, motors and electronic throttle bodies have been replaced needlessly due to these trouble codes. In this video we will focus primarily on fuel trim data to determine if we have a vacuum leak. LTFT values will be shown at different RPMs to give us a clear direction. Engine Performance Diagnostics chapter 4 Symptoms - check engine light (P0171, P0174, P0506 trouble codes) - rough idle - poor gas mileage - hesitation on acceleration Fix - replace EGR valve (worn pintle) - intake manifold gasket (leak) Tests shown - how to interpret idle speed control data - how to interpret electronic throttle control data - how to use fuel trim data to identify a vacuum leak - how to smoke test an intake manifold - fuel trim data at different RPMs Tools used - scan tool - smoke machine Playlist - (Chapters 4 and 5) Fuel Trim and Oxygen Sensor Testing /playlist/PLD2809EEC7BAAF989 Related videos - P0507 Idle Speed Performance Higher Than Expected (vacuum leak) - Jeep /watch/8CcqukHrgJtrq - P0507 Idle Control System (RPM Too High) - vacuum leak - GM /watch/c8Z-80WnJKPn- - False mass airflow sensor/idle control system codes - vacuum leak /watch/EXZ_xjS0aE10_ - Chapter 20 "Idle Speed Controls" - preview (an SD Premium video) /watch/QK1E_W3WmYDWE For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere! Disclaimer: Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

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