Why does the car idle speed become low?
1 Answers
Car idling is not a speed, but refers to a working condition. When the engine is running without load, it is called idling. When the engine is running and the accelerator pedal is completely released, the engine is in idle condition. The engine speed during idling is called idle speed. The idle speed can be adjusted by changing the throttle opening size, etc. Generally speaking, the optimal idle speed is the lowest speed at which the engine does not vibrate. Common causes of too low idle speed include: 1. Faulty idle control valve. 2. Poor atomization or clogging of fuel injectors. 3. Changes in oil viscosity. 4. Issues with crankshaft position sensor, etc.