The Mass Air Flow sensor measures the amount of air entering the engine. Over time, oil, dust, and carbon build up on the sensor's thin wires, leading to rough idling or poor fuel mileage. A MAF cleaner is a spray that removes this dirt without leaving any residue. Never touch the delicate wires with your fingers, cotton swabs, or brushes. Simply spray the sensor from a short distance and let it air dry completely before reinstalling it in the intake duct.
Mechanic Glossary
MAF Cleaner
A zero-residue, fast-evaporating solvent spray used to clean the delicate sensing wires of a Mass Air Flow sensor.
Frequently Asked Questions
No. Carburetor cleaner is too harsh and will melt the plastic housing or damage the delicate platinum sensing wires, ruining the sensor.
Common signs include engine hesitation, stalling, poor acceleration, a check engine light for lean or rich codes, and decreased fuel economy.
It is a good practice to clean the sensor every time you inspect or replace your engine air filter.