Why does a car stall while driving?

2 Answers
VonCarlos
07/24/25 4:02am
Stalling caused by carbon deposits, especially at the electronic throttle, which is an intake system fault. Here is a related introduction about stalling: 1. Reasons for stalling: The use of inferior fuel (many gas stations sell impure fuel for huge profits) leads to engine carbon deposits and stalling, or due to spark plug or ignition coil failure, causing one or more cylinders to misfire, resulting in stalling. 2. Solutions: Stalling at idle: When the vehicle is idling, the speed is not very fast, and you only need to restart the engine after stalling. For automatic transmission vehicles, you must shift the gear to park or neutral before restarting the engine.
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MorganAnn
08/10/25 11:36pm
I've been driving for almost twenty years and have experienced engine stalling several times, which is really nerve-wracking. There are several common causes: first, issues with the fuel system, such as a broken fuel pump or a clogged fuel filter, leading to insufficient fuel supply to the engine; second, electrical system failures, like an old battery running out of power or a generator malfunction cutting off electricity; third, ignition system failures, such as worn-out spark plugs failing to produce sparks or short circuits in the ignition coil. Once, I was driving smoothly on the highway when the engine suddenly stalled, and upon inspection, I found that the air flow sensor was dirty and reporting an error. These failures often come without warning, so I've developed a habit of servicing my car every 5,000 kilometers—changing the oil and filters, and checking for loose connections. Engine stalling at high speeds is particularly dangerous, as it can easily lead to rear-end collisions. Don't wait for an accident to regret not taking precautions.
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