Why celica st 184 engine cut out after its warm up?

The engine in a Celica ST184 may cut out after warming up due to several potential issues. Common causes include a faulty coolant temperature sensor, which can lead to incorrect readings and improper fuel mixture, or issues with the idle air control valve, affecting idle stability. Additionally, fuel delivery problems, such as a clogged fuel filter or failing fuel pump, can also cause stalling when the engine reaches operating temperature. Diagnosing these problems typically requires checking the fuel system, sensors, and ignition components.