Why is my 1993 toyota camry shutting down whenever the engine gets warm? I recently replaced the water pump,but it was a second hand one. The car is not running hot it just tend to start when the engine is cold.When the engine warms that's where the problem starts. I just change the oil but its still doing the same thing.please help.

An electronic component, such as the Ignition Control Module and/or coil, is breaking down under load (heat) and causing the engine to die.