How to clean a Mass Airflow Sensor. Mass Airflow Sensor cleaning can increase fuel economy, stop hesitation and stalling, and shut off your check engine light. This is a simple procedure and in this video I go in-depth about cleaning the sensor and I take readings from an OBDII scanner to show before and after cleaning the sensor. A mass airflow sensor gets dirty because of oiled filters such as a KNN air filter, air filters that are not replaced often enough, and dusty roads (salt, sand, pollen, etc). Symptoms of a dirty MAF sensor are hesitation, poor idle, bad fuel economy, and stalling. You can also get a check engine light with codes P0100, P0102, P0103, P0104, and P0105. Bluedriver Scanner I used: http://amzn.to/1XNUGfz Mass Airflow Cleaner: http://amzn.to/1po5AxE Average Fuel Economy for the month before I cleaned the sensor: 17.5mpg 1 fill-up later: 18.97mpg 2 fill-ups later: 20.86mpg 3 fill-ups later: 19.10mpg 4 fill-ups later: 20.1mpg 5 fill-ups later: 19.13mpg Cleaning a MAF to stop Hesitation and Stalling: COMING SOON How to Fix a Car that Idles Poorly: https://www.youtube.com/watch?v=vFhoNykgQtc How to Replace Oxygen Sensors: https://www.youtube.com/watch?v=_Kr-c8eBl5E Become a ChrisFix Subscriber→ null Instagram→ https://www.instagram.com/chrisfixit Facebook→ https://www.facebook.com/chrisfix8 Website → http://www.ChrisFixed.com/ My Channel Home Page → null *If the video was helpful, remember to give it a "thumbs up" and consider subscribing. New videos every Thursday* Disclaimer: Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed 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 from the information contained in this video is the sole responsibility of the user and not ChrisFix.