What Causes a Car to Suddenly Stall While Driving?
2 Answers
The reasons why a car suddenly stalls while driving are: 1. Abnormal temperature environment of the water temperature sensor; 2. Abnormal noise from the fuel pump - when starting the car, listen for any unusual sounds from the fuel pump under the car seat. If none are heard, try tapping the fuel tank with a wrench or other tool before restarting; 3. Malfunction of the throttle position sensor, which is related to the system. Incorrect data settings can also cause sudden stalling; 4. Excessive carbon buildup in the throttle. In this case, gently press the accelerator while attempting to ignite.
Last year, my car suddenly stalled on the highway—what a scary moment! After checking the cause, it's usually a fuel supply issue, where the fuel pump might have failed or the filter was clogged, preventing fuel from reaching the engine. The ignition system is also a common culprit, with issues like worn spark plugs or a short-circuited ignition coil causing misfires. Electrical faults, such as a weak battery or a faulty alternator, can lead to a power loss. Sometimes, sensor failures, like a faulty crankshaft position sensor, can confuse the engine control system. Engine overheating can also trigger an automatic shutdown as a protective measure. In such situations, my biggest fear is a secondary accident, so I immediately turned on the hazard lights and pulled over—safety first. Afterward, I took the car to a repair shop for a full inspection, replaced some parts, and it ran much better. I highly recommend regular vehicle maintenance to prevent such issues.
