engine stall causes
The fuel system. Whether it is a fuel quality issue or a fuel supply or fuel injector issue, the fuel system can be the cause of your car stalling. Three things from the fuel system can cause your engine to stall: bad fuel, too little fuel, and too much fuel. When poor fuel quality is the problem, your engineâs combustion process isnât efficient. If there are contaminants or water in the fuel, a misfire can occur. That is when the spark plug isnât able to fire or the fuel in the engine isnât able to burn. It can cause a stumble, or can cause the engine to stall if it happens consistently. Your engine can stall if it is being starved of fuel.
Additionally, if the parasitic load placed on the engine is higher than the command to overcome it, the engine will stall (the parasitic load could be such things as the power steering, air conditioning, charging system, torque convert clutch, etc.)