Toyota Pickup engine shuts off after warming up, experiencing rough idle despite new fuel pump and filter on Toyota Pickup

Some Toyota Pickup owners report experiencing engine shutdowns after warming up and rough idling, even with a new fuel pump and filter installed. These issues may stem from an improperly adjusted idle screw on the throttle body, which can affect idle behavior. Additionally, vacuum or air intake leaks are common culprits, often resulting from cracked intake hoses or disconnected vacuum lines. High cold idle speeds can also disrupt normal idle circuits once the engine reaches operating temperature, leading to further rough idling and stalling. Furthermore, incorrect timing settings may initially allow smooth running but can cause problems as the engine warms up. A dirty throttle body is another factor that can contribute to these symptoms, necessitating a thorough cleaning for proper airflow. Lastly, malfunctioning sensors, such as the Mass Airflow Sensor (MAF) or Idle Air Control (IAC) valve, should be checked and replaced if necessary. Addressing these potential issues systematically is crucial for resolving the engine performance problems in the Toyota Pickup.