What Are the Causes of Car Engine Stalling?
2 Answers
There are three main causes of car engine stalling. Below is an introduction to the reasons for car engine stalling: 1. Excessive carbon deposits in the throttle body, idle speed motor, intake tract, and combustion chamber. 2. Poor fuel pressure maintenance performance in the electronic control system. 3. Low fuel pressure leading to poor fuel atomization. Other reasons: 1. For stalling during hot driving, first check the carbon deposits in the throttle body. Secondly, an abnormal resistance value in the crankshaft position sensor can cause the crankshaft speed signal to disappear after the engine heats up, leading to engine stalling. 2. Malfunction of the fuel pump itself, where prolonged operation causes resistance changes, preventing normal operation and maintaining proper fuel pressure, resulting in engine stalling when hot. 3. Ignition system failure, overheating of the ignition module preventing normal operation, and ignition voltage failure causing engine stalling. 4. Abnormal throttle signal voltage and improper engine computer control can both lead to vehicle stalling during driving. 5. Loose connections in the wiring can cause intermittent engine stalling.
I've been driving for almost twenty years and have encountered sudden engine stalling several times, each situation being quite troublesome. The most common causes include: fuel system issues, such as a failed fuel pump cutting off supply, a clogged fuel filter, or simply running out of gas; electrical problems like worn-out spark plugs failing to ignite or faulty ignition coils causing spark interruption; sensor malfunctions, for example, a broken crankshaft position sensor misleading the computer to shut down the engine; and mechanical failures such as engine overheating or belt breakage can also trigger stalling. Once, my car stalled on the highway, the brakes suddenly became heavy, and steering was difficult—I immediately turned on the hazard lights and pulled over. It's advisable to keep an OBD scanner in the car for quick fault code checks; don't skip routine maintenance—regular oil changes, throttle body cleaning, and inspecting the fuel and electrical systems every 5,000 kilometers can help avoid unexpected breakdowns on the road.
