What Causes a Car to Stall?
2 Answers
Car stalling causes and solutions are as follows: 1. Excessive valve deposits. During engine operation, excessive dust accumulates between the motor valve core and throttle seat. Solution: Simply clean the idle speed motor. 2. Fuel line obstruction. Frequently adding substandard fuel containing excessive gum deposits can clog the fuel system. Solution: It is recommended to clean the fuel lines, injectors, throttle body, and fuel tank. 3. Damaged idle speed motor or its circuit, or issues with the idle speed control module in the engine control unit. Solution: Requires inspection and repair at an authorized 4S service center.
I've encountered car stalling quite a few times during decades of driving. The most common causes are: running out of fuel unnoticed, leaving the engine without fuel supply; aging or undercharged batteries, especially during cold winter starts; excessively dirty air filters blocking the intake, leading to insufficient oxygen for combustion; faulty idle control valves causing unstable RPM; and sensor failures, like a broken throttle position sensor that can't regulate air intake properly. If not addressed promptly, sudden stalling at intersections can be dangerous - immediately turn on hazard lights, pull over, and check fuel levels and battery condition. Regular maintenance prevents these issues: clean filters during oil changes, and monitoring battery health is crucial.
