Faulty mass air flow sensor ground

Chevy Malibu MAF Ground problemThis is a good video on how to check sensor grounds using a voltmeter. Once you get more comfortable with this type of testing, it is far more accurate than the ohmmeter. How to test your mass air flow sensor (MAF) and to quickly know if it is defective. Mass air flow sensor testing with a multimeter without dismantling. MAF) Sensor to go BAD and not leave a diagnostic trouble code.. but sometimes you'll get the MAF trouble code and the MAF is good.

The ground inside mass air flow (MAF) sensor can corrode and possibly cause drivability problems. The corrosion is enough to affect the sensor data but not enough to create a trouble code.

Mass Airflow MAF Sensors - Auto Diagnosis Repair Help

MAF sensor should have read grams per second at idle.The mass air flow reference voltage and ground must be checked at the sensor connector. The signal voltage or frequency needs to be checked at different engine RPMs and compared to the reference chart. MAF sensor may be hard to start or stall after starting. It may hesitate under loa surge, idle rough or run excessively rich or lean.

MAF) has become a standard part on most engine applications and is mounted in the intake air stream just past the air filter. It measures the amount of air (volume) in the intake flow by way of a thin wire mounted in the air stream.