It is responsible for controlling the amount of air bypassing the throttle plate at idle speed. If this valve fails or gets stuck, it will cause incorrect idle behavior.
2. Throttle Body:
In some cases, dirt or accumulation of carbon inside the throttle body can disrupt proper airflow and lead to engine stay running.
3. Vacuum Leak:
A vacuum leak can cause various issues including engine staying.
4. Fuel Pressure Regulator (FPR):
A faulty fuel pressure regulator can deliver excessive fuel to the engine, causing it to stay running after turning the key off.
5. Clogged Fuel Injectors:
If fuel injectors become clogged or restricted, they may continue to supply fuel to the engine, leading to an unintended running condition.
6. Coolant Temperature Sensor (CTS):
This sensor provides the Engine Control Unit (ECU) with information about engine temperature. If it malfunctions, it might send incorrect temperature signals, affecting the fuel mixture and causing issues like prolonged engine running.
7. Electronic Control Module (ECM):
If the ECM, also called the Engine Control Unit, fails or develops software issues, it can lead to engine operating irregularities and stay running problems.
8. Faulty Ignition Switch:
A malfunctioning ignition switch might not completely turn off electrical power to the fuel system, leading to unintended engine operation.
9. Wiring Issues:
Inspect for any loose or damaged wires that might interfere with the proper electrical communication between components involved in engine shutdown
