Why Car Stall When the Engine is Hot | Cartech Home

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Why Car Stall When the Engine is Hot


Car stalls when the engine is hot or the temperature is abnormally hot while driving. When the car stall if the engine is abnormally hot, this often cause by a vapor lock occurred on the engine.


Vapor lock happens when a gas going to the engine starts to boils before it reaches the combustion chambers, when the gas boils an air bubble is produced which then causes the air/fuel ratio to have too much air and not enough gasoline, in this case, the ratio is weak and not enough to cause the engine to stay running. Vapor lock is triggered by an extremely hot engine.

Possible cause why engine stall when hot

(1)Vapor lock.


How to fix car stalling when the engine is hot
When your car engine stalls while driving on an extremely hot engine, or weather probably you encounter vapor lock. In this case no other option but to wait for the car engine to cools down before continue driving, also bring the car to a reputable auto repair shop for inspection and determine why the engine gets extremely hot. One reason for the engine to become extremely hot is by having a cooling system problem. Have it check to confirm that it causes the engine to become hot and avoid vapor lock problem that causes your car to stall when the engine is hot.



Car Stalling at Idle

For a car with fuel injection stalling during idling is either caused by a bad idle air bypass valve, bad cold start valve, bad fuel pressure regulator.

Learn more: Car Stalling at Idle

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