When your car engine is extremely hot your car engine shut off.
Car Problem Diagnosis
If this kind of problem occurs only when your car engine is hot, it indicates “run-on” problem. “Run-on” occurs when an engine is extremely hot in which unburned fuel in the cylinder will self ignite due to extremely high engine temperature.
Possible Cause of Engine Shut Off
Extreme engine temperature triggers run on.
How to Prevent Engine Shut Off When Temperature is High
This kind of problem is normal especially on extremely hot engine, to prevent such occurrence try using a gasoline with high gasoline octane rating. A gasoline with a high gasoline octane rating is fairly resistant to engine run on. Also bring your car to a reputable auto repair shop to check if there is a problem in your car engine cooling system because this might be the cause why your car engine becomes extremely hot.