What Causes a Sudden Engine Stall While Driving Normally?
2 Answers
The reasons for a sudden engine stall while driving are as follows: Electrical Circuit Failure: This could be due to a low-voltage power interruption during driving, causing the engine to stall. In this case, you can mainly check the ignition and starter switch, as well as the fuse box. Electrical Component Failure: This issue is usually related to the ignition coil, capacitor, or electronic ignition module. The car may start initially but stalls after a while, then starts again, only to stall once more. Fuel System Failure: Possible causes include a damaged fuel pump, ruptured fuel line, clogged carburetor fuel inlet, or an empty fuel tank. However, under these circumstances, the car may still be restarted, though with great difficulty.
I've been driving for over a decade. Sometimes the engine suddenly stalls, possibly due to a faulty fuel pump not supplying enough fuel, or clogged fuel lines and dirty filters. Loose or aged battery terminals can cause ignition interruption, and if sensors like the crankshaft position sensor fail and lose signal, the engine will stop. Running low on fuel and forgetting to refill can also cause this. It's very dangerous if the engine stalls while driving - immediately turn on hazard lights and pull over to avoid accidents. For prevention, I check engine oil and coolant monthly, replace air and oil filters every six months, and maintain the car well to reduce malfunctions.
