What faults will occur if the car air flow meter is damaged?
2 Answers
It may cause unstable engine idling with jerking phenomena, poor acceleration, black smoke from exhaust, etc. Below is the relevant introduction: Automobile: According to the latest national standard of China "Terms and Definitions of Types of Automobiles and Trailers" (GB/T3730.1—2001), an automobile is defined as follows: A non-track vehicle driven by power, with four or more wheels, mainly used for: transporting people and/or goods; towing vehicles that carry people and/or goods; special purposes. Air flow meter: The air flow meter is a device that converts the inhaled air flow into electrical signals. The advantages of the air flow meter are minimal pressure loss and a large measurable flow range. The ratio of the maximum flow to the minimum flow of the air flow meter is generally more than 20:1, with a wide applicable industrial pipe diameter range, up to 3m, and the output signal is linear with the measured flow, with high accuracy.
I've been running an auto repair shop for over 20 years, and damaged mass air flow (MAF) sensors are quite common. When this part fails, the engine immediately acts up—shaking like an old ox panting, making the ride rough. Acceleration becomes sluggish, with delayed throttle response that makes climbing hills a struggle. Fuel consumption spikes, burning through extra gas money. In severe cases, starting becomes difficult, especially when cold, requiring multiple ignition attempts. Exhaust emissions also exceed standards, emitting foul odors. I've handled many cases where the check engine light triggered system-wide chaos. Ignoring it risks engine damage, but replacing the MAF sensor solves it. I recommend drivers stay alert to abnormalities like shaking or increased fuel consumption and visit a professional shop promptly for inspection.
