Why does my truck run better when I unplug the MAF sensor?
The MAF sensor measures air weight in grams per second and air temperature and if either of those two are off then the ECU may command a leaner or a richer mixture. By disconnecting the sensor the ECU switches to limp mode and the car may idle better .
How do you bypass the MAF sensor on a Chevy?
How to Bypass the Cold Air Intake Sensor
- Turn off the ignition of your vehicle and open its hood.
- Disconnect the negative battery cable (red).
- Grasp the wire harness that connects the MAF sensor to the power unit in the engine compartment and gently pull it out of the MAF sensor.
How much does a mass air flow sensor cost?
The average MAF sensor replacement cost is between $140 and $550, depending on the car model and labor costs. A Mass Air Flow Sensor costs $100 and $400 while the labor costs $40 to $150. The MAF sensor itself is often quite expensive, as you sometimes have to replace the whole MAF sensor housing. Even the sensor itself can be expensive.
What is a bad mass air flow sensor?
The most common reason for a mass air flow sensor to go bad is the sensor hot wire/hot film surface contamination, commonly referred to as a dirty mass air flow sensor. If you’ve got a car that doesn’t need maf sensor resetting, you can just replace the sensor and start your engine.
How do you test a mass air flow sensor?
How To Test The GM Mass Air Flow Sensor: GMC Savana Van and Chevy Express Van 4.3L,5.3L,6.0L Engines (2003-2008)
What is the function of a mass airflow sensor?
it restricts airflow which limits engine output