The mass air flow sensor (MAF) tells the PC how much air is flowing into the engine; we read that data in grams. So a little air means no foot on the throttle and lots of air means foot to the floor.

Check to see if these wires have 12 volts at the mass air flow sensor using a multimeter. This voltage will only be applied for approximately 5 to 30 seconds after the engine has been shut off ...

The Modified Mass Air Flow Sensor is an excellent changeover to any TPIsystem. The Modified unit allows more air to flow through the sensorinto the engine.

And if your car's check-engine light is giving you the side-eye, it helps to know about other sensors, too, like the Mass Air Flow sensor and when it goes bad.