how to test mass air flow sensor with scanner

Connect to the vehicles computer and stream the MAF grams per second GPS reading. MASS AIR FLOW SENSOR.


How To Test An Maf Sensor Axleaddict

A multimeter is a device that measures values like the voltage resistance and current.

. Connect the black lead to the negative terminal of. Mechanics measure the amount of air flow mass air flow sensor readings at different RPMs. In modern cars the only way to test the mass air flow sensor is with a scan tool.

How Does a Mass Air Flow Sensor Work. Here are some of the most common symptoms of a faulty mass airflow sensor. Bad sensor will not be responsive dirty sensor will have limited or slow.

Trouble codes P0171 System Too Lean Bank 1 and P0174 System Too Lean Bank 2 are also often caused by a bad or contaminated mass air flow sensor. It is a must-have gadget. The engine stalls shortly after starting.

You can get a reading of the MAF sensor with an advanced scan tool. The Mass Air Flow Sensors Signal Wire Test. Turn the ignition of the car off.

In this video we will demonstrated how we tested the MAF sensor on this BMW to see if it is good or bad. This MAF test is done in 3 easy steps. The air cleaner assembly and hoses should be properly connected and tight to avoid air leaks.

Ford has used a Hot-Wire type mass air flow sensor for many years that. Inside of the MAF sensor is a very hot wire. In this test tutorial Ill show you how to test the mass air flow sensor to see if its bad and lighting up the check engine light or not.

Check the air filter for clogging filter housing and ductwork for debris and dust. How to Test the Mass Airflow Sensor without a Multimeter. The engine is very hard to start or turn over.

Connect the MAF sensor to the connector. The mass air flow sensor sits inside of the intake snorkel connected to the air intake box. You can test the mass air flow sensor using a scanner or a voltmeter.


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