What Is a Remanufactured Air Flow Sensor

Cars need to breathe. Too much or too little air will cause big problems for your engine. Make sure you know what a remanufactured air flow sensor is, how it helps your vehicle breathe and when you may need one.

Air Flow Sensor Basics

The air flow sensor (AFS) measures how much air enters the engine on vehicles that have an electronic fuel-injection system. The sensor allows the vehicle to let more or less air into the engine, which controls idle speed and acceleration.

Remanufactured Definition

A remanufactured part is different from a rebuilt part. When you rebuild a part, you only replace the broken pieces. When something is remanufactured, the entire piece, called the core, is taken apart. All pieces are then cleaned, repaired or replaced.

When Your AFS Fails

If your vehicle begins to stall, misfire or accelerate slowly or not at all, you might need to replace your AFS. In this case, a remanufactured sensor will cost less than a new one. Have your vehicle checked by a certified mechanic before buying or trying to replace it yourself.