https://stream.echo6.co/videos/watch/28a959a1-a558-4335-b156-196d23219649 Did you install a cold air intake on your car? Maybe you shouldn't have! This video will show you how changing an air intake system can affect a MAF sensor signal. This was a 2001 Chevy Van that had a missing air filter causing severe driveability problems and unnecessary replacement of multiple different MAF sensors. Engine Performance Diagnostics chapter 12 Symptoms severe low power, would not run unless the MAF sensor was unplugged, backfiring through the intake, hesitation, check engine light (P0171, P0174, P0102), Fix replace missing air filter element, Tests shown how to use fuel trim to determine the cause of a lean condition, how to interpret MAF sensor data on a scan tool, what normal fuel trim data should look like, how disconnecting a sensor can be used as a troubleshooting guide (substituted values), Tools used Scan Tool (alternative to Snap-on) Autel MS905 MaxiSys Mini Diagnostic System https://www.jbtoolsales.com/autel-ms905-maxisys-mini-diagnostic-system-with-vci-and-connector-kit-usa-version/#oid=1014_1, Playlist (Chapter 12) Mass Airflow Sensor Testing https://www.youtube.com/playlist?list=PLAFYVCyenqcrUtzoyk65FMfo9pxhK6Vay, Related videos Low power, lean conditions (cracked air intake tube) GM https://youtu.be/-5L5tp4NDq0, How to troubleshoot a faulty MAF sensor (Mercedes Benz) https://youtu.be/5Zb7q0aunz8, How to test a MAF sensor using a Picoscope - GM https://youtu.be/h5KAHv47viw, MAF sensor code P0102 from bad engine computer - (Chevy van) https://youtu.be/dCyPkbli6zs, MAF sensor trouble code (P0102) caused by a bad ground (GM 3100) https://youtu.be/bJRLZnjS6ms, 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. Fri, 01 May 2026 08:20:45 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/28a959a1-a558-4335-b156-196d23219649 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.