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How to test Mass Air Flow Sensor
When I drove my car without the MAFconnected (warning don't drive for long as this will mess your CAT) my car drove very good, no hesitation under load. But on idle it was very rough. With the bad sensor was connected on it would idle ok and hesitate badly under load. This made me guess it was my MAF which was bad. I have replace it with aftermarket and has now fixed the problem. Can't beleive how much more horse power I have got. Cleaning the MAF didn't work for me.

Bad MAF

HOW TO CLEAN A MASS AIR FLOW SENSOR / METER , M.A.F. SENSOR !!!
This is how to clean a mass airflow sensor , this car is a 2003 ford crow vic police interceptor , but any car or truck with a mass air flow sensor will be cleaned in the same way , and they all are located in the air intake like this one , open your hood and you are sure to spot it , and the process is very simple , so clean away , even if you don't think you have a problem , clean it , you will notice power , and fuel mpg improvements 100% guaranteed , so get cleaning , also check out my video on cleaning your throttle body , this can be done with the same cleaner , and will help idle smoothness , and off idle stumbles , misses , and could turn off that big orange light on your dash too !!!

How To Test A Bosch MAF Sensor
Testing a mass air flow sensor for a Volvo XC V70. Most Bosch film type sensors are the same. They are used on various BMW Mercedes ETC. Measuring output voltage by backprobing the plug wires.

MAF Sensor or Mass Air Flow Sensor
MAF Sensor or Mass Air Flow Sensor Amazon Printed Books https://www.createspace.com/3623936 Amazon Kindle Edition http://www.amazon.com/Automotive-Testing-Diagnostic-Strategies-ebook/dp/B0052YFOCI/ref=sr_1_2?s=digital-text&ie=UTF8&qid=1360016628&sr=1-2&keywords=sensor+testing%2C+mandy+concepcion Android APPs https://play.google.com/store/apps/details?id=com.app.book.AOTLVEWIWPXAXYGMZ&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hcHAuYm9vay5BT1RMVkVXSVdQWEFYWUdNWiJd MAF sensors measure the incoming air into the engine. This video shows how they work and testing procedures. Includes Vane and Hot-wire sensors. (note: We allow all schools and training institutions to use our software free of charge, so long as it is not sold to others. You're encouraged to download our free automotive simulation software for more information. ************************************************************************************** Amazon Printed-Books & Kindle: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=mandy+concepcion Google Play Android APPs: https://play.google.com/store/search?q=mandy+concepcion&c=apps Amazon Video DVDs: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dmovies-tv&field-keywords=mandy+concepcion Barnes & Noble Nook: http://www.barnesandnoble.com/s/mandy-concepcion?keyword=mandy+concepcion&store=allproducts Apple iTunes iPad: http://itunes.apple.com/us/artist/mandy-concepcion/id449573393?mt=11

Ford MAF Sensor Testing, Ground & Signal
Ford MAF Sensor Testing, Ground & Signal Testing the Ground Circuit of the Ford mass air flow sensor. The Ground circuit connects at the Battery Negative Terminal, and in this test, you'll make sure that the wire is actually doing its job. Here's how to test the ground. Turn key to the OFF Position. With the Multimeter in VOLTS DC mode. Connect the BLACK Multimeter test leed, to the circuit identified with the letter B, as shown in the video. Connect the red leed to the battery positive terminal. No need to turn the key to the On position, since the Multimeter should automatically read Battery Voltage as soon as the connection is made. If the Multimeter registered 12 Volts, This tells you that this Ground circuit is OK. If the Multimeter DID NOT register 12 Volts, The mass air flow sensor is not the problem. Without a clear path to Ground in this circuit, the Ford mass air flow Sensor will not work. THAT WAS JUST an excerpt of this video. It goes into details on specifically testing the FORD MAF sensor. Get the scoop here. Presented using advanced software CG animation technology to help you understand. Part of our Automotive Technology series shown here on this channel. Enjoy... ************************************************************************************** Amazon Printed-Books & Kindle: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=mandy+concepcion Google Play Android APPs: https://play.google.com/store/search?q=mandy+concepcion&c=apps Amazon Video DVDs: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dmovies-tv&field-keywords=mandy+concepcion Barnes & Noble Nook: http://www.barnesandnoble.com/s/mandy-concepcion?keyword=mandy+concepcion&store=allproducts Apple iTunes iPad: http://itunes.apple.com/us/artist/mandy-concepcion/id449573393?mt=11

Oxygen Sensor Diagnosis and Replacement Simplified - NGK Spark Plugs - Tech Video
A simplified overview of Oxygen Sensor diagnosis and replacement. This is a simple approach and brief overview.

Mass Airflow Sensor MAF Check 94 Explorer
Explorer Mass Airlow sensor check

MAF Test part 1
Code p0101 can be misleading and hard to confrim. Here is how to diagnose it.

Tip Clip: Knock Sensor Testing
Dave Scaler from MEA presents testing tips on the most popular import models your customers drive today. Learn quick & surefire ways to diagnose and fix the toughest problems in this growing portion of your repair business. Check it out at http://www.auto-video.com/import-testing-techniques-p-3.html

MAP Sensor & Wiring Diagram
MAP Sensor & Wiring Diagram Amazon Printed Books https://www.createspace.com/3623928 Amazon Kindle Edition http://www.amazon.com/Automotive-Electronic-Diagnostics-Course-1-ebook/dp/B0052MCTRI/ref=sr_1_1?s=digital-text&ie=UTF8&qid=1360015586&sr=1-1&keywords=electronics+1%2C+mandy+concepcion Android APPs https://play.google.com/store/apps/details?id=com.app.book.AOTLXEBCBQELJLABI&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hcHAuYm9vay5BT1RMWEVCQ0JRRUxKTEFCSSJd The MAP sensor or manifold air pressure sensor is a main input to the ECM or engine control module. This sensor detect the intake manifold pressure change value and converts it into a signal voltage. Get the scoop on the MAP sensor from an electronic point of view and towards reading wiring diagrams. Presented using advanced software CG animation technology to help you understand. Part of our wiring diagram and electronic series shown here on this channel. Enjoy... ************************************************************************************** Amazon Printed-Books & Kindle: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=mandy+concepcion Google Play Android APPs: https://play.google.com/store/search?q=mandy+concepcion&c=apps Amazon Video DVDs: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dmovies-tv&field-keywords=mandy+concepcion Barnes & Noble Nook: http://www.barnesandnoble.com/s/mandy-concepcion?keyword=mandy+concepcion&store=allproducts Apple iTunes iPad: http://itunes.apple.com/us/artist/mandy-concepcion/id449573393?mt=11

O2 or Oxygen Sensor Signal
O2 or Oxygen Sensor Signal Amazon Printed Books https://www.createspace.com/3623936 Amazon Kindle Edition http://www.amazon.com/Automotive-Testing-Diagnostic-Strategies-ebook/dp/B0052YFOCI/ref=sr_1_2?s=digital-text&ie=UTF8&qid=1360016628&sr=1-2&keywords=sensor+testing%2C+mandy+concepcion Android APPs https://play.google.com/store/apps/details?id=com.app.book.AOTLVEWIWPXAXYGMZ&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hcHAuYm9vay5BT1RMVkVXSVdQWEFYWUdNWiJd Explains how to read the O2 sensor signal on the OBD-II scanner, Scope-1 or Scan-1. The O2 sensor generates a signal. A Scope-1 or automotive oscilloscope is then used to read the signal and an analysis is made. The proper analysis of the O2 sensor will determine its general condition or if a replacement is needed. This video also explain the O2 sensor operation and other ways to test it. ************************************************************************************** Amazon Printed-Books & Kindle: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=mandy+concepcion Google Play Android APPs: https://play.google.com/store/search?q=mandy+concepcion&c=apps Amazon Video DVDs: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dmovies-tv&field-keywords=mandy+concepcion Barnes & Noble Nook: http://www.barnesandnoble.com/s/mandy-concepcion?keyword=mandy+concepcion&store=allproducts Apple iTunes iPad: http://itunes.apple.com/us/artist/mandy-concepcion/id449573393?mt=11

Mass Airflow Sensor (MAF) Idle issues - 2002 Toyota Corolla
Recently the 2002 Toyota Corolla started having issues with rough idling and poor running. Here's how we remedied the problem by cleaning the Mass Airflow Sensor (MAF)

Revving Engine with Bad MAF plugged in
Car starts on a dime after MAF gets unplugged again. Plug MAF in and rev the engine for it not to die to hear how good she sounds with bad AFR tune from Z32 MAF which is bad as well

MAP or Manifold Air Pressure Sensor
MAP or Manifold Air Pressure Sensor Amazon Printed Books https://www.createspace.com/3623936 Amazon Kindle Edition http://www.amazon.com/Automotive-Testing-Diagnostic-Strategies-ebook/dp/B0052YFOCI/ref=sr_1_2?s=digital-text&ie=UTF8&qid=1360016628&sr=1-2&keywords=sensor+testing%2C+mandy+concepcion Android APPs https://play.google.com/store/apps/details?id=com.app.book.AOTLVEWIWPXAXYGMZ&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hcHAuYm9vay5BT1RMVkVXSVdQWEFYWUdNWiJd The MAP sensor is a main input to the ECM or engine computer. The MAP sensor measures the difference in air pressure between the intake manifold and atmospheric pressure. The ECM infers engine load from the MAP sensor reading. Learn how it works, what's the reference voltage and how to test it. unique information found only here. ************************************************************************************** Amazon Printed-Books & Kindle: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=mandy+concepcion Google Play Android APPs: https://play.google.com/store/search?q=mandy+concepcion&c=apps Amazon Video DVDs: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dmovies-tv&field-keywords=mandy+concepcion Barnes & Noble Nook: http://www.barnesandnoble.com/s/mandy-concepcion?keyword=mandy+concepcion&store=allproducts Apple iTunes iPad: http://itunes.apple.com/us/artist/mandy-concepcion/id449573393?mt=11