What is the normal air flow rate when a car is idling?
1 Answers
Under normal circumstances, the air flow signal data of a car engine at idle is about 2.5g per second; if it is less than 2.0g per second, it indicates an air leak in the intake system, and if it is more than 4.0g per second, it indicates an additional load on the engine. Here is more information about air flow: 1. The normal value of air flow for each engine is different, and the larger the displacement, the greater the air flow value. The faults of the air flow sensor are divided into two categories, one is that the signal exceeds the specified range, indicating that the air flow sensor has failed. 2. Modern electronically controlled cars have a fail-safe function. When the signal of a certain sensor fails, the electronic control unit (ECU) will replace it with a fixed value or use the signal of other sensors to replace the signal of the faulty sensor.