When most people hear of a car stalling, they think of manual-transmission cars, and situations like failed hill-starts or stalling when starting after waiting at traffic lights.
However, in fact, even automatic cars can stall.
Why does this happen?
The cause of stalling in automatic vehicles
Here, we will introduce the engine stalling by symptoms.
1.Quiet stalling without warning
On occasion, a vehicle might suddenly stall without any warning when running. There is a possibility that trouble may have occurred in the ignition system.
Specifically, there is a problem with spark plug or plug cord.
Because the spark plug does not ignite, the fuel mixture will not ignite and the engine will stall.
2. Engine vibration, followed by stalling
Rattling and vibration from the engine, followed by a decrease in speed and then stalling, is likely the fault of a problem within the fuel system.
Specifically, it is conceivable that a failure of the fuel pump, clogging of the fuel hose / filter, or the like has occurred.
Fuel is not being properly fed into the combustion chamber, and the engine is stalling.
3. Stalling when cornering or at the top of a steep hill
If, when cornering or at the top of a steep slope, the vehicle speed gradually drops and the engine stalls, it is probably because the fuel pump has failed.
When cornering, force is applied from the side direction of the car, and when climbing steep slopes the car is facing up the hill. Fuel cannot reach the engine successfully because of the faulty fuel pump, and the car will stall.
4. Stalling when stepping on the accelerator heavily
In cases where the car stalls as you try to accelerate, this may indicate that the fuel sensor system that controls the fuel injection, is broken.
The correct amount of fuel suitable for the amount of depression of the accelerator is not sent to the engine, so it stalls.
5. Stalling when decelerating
If the car stalls when you take your foot off the accelerator to slow down or stop, it may be due to a malfunction of the control system such as the vacuum sensor. This sensor controls the throttle valve, which adjusts the amount of air fed to the engine.
Even if the foot is released from the accelerator and the fuel flow rate decreases, the air does not decrease, so the ratio of gasoline to air will change and the engine will stall.
6. “Shoo” sound from the engine bay, followed by stalling
This may be due to deterioration of pipes and hoses around the engine from aging, causing air leakage.
Because it draws in extra air through the cracked part, if you release your foot from the accelerator, the proportion of gasoline and air will change and the engine will be stall.
The cause of the engine's stall is mostly a malfunction or breakdown of parts related to the vehicle.
You should try to prevent the engine stalling by checking the car from day to day.
