Assuming you meant a 2.0L engine, here are some possible causes for a flooded engine at idle with throttle body injection:
Fuel Injector Related Issues:
* Stuck Open Injector: The most likely culprit. The injector may be physically stuck open due to a mechanical issue, debris, or a faulty solenoid. This continuously pours fuel into the engine.
* Faulty Injector Driver Module: This module controls the injectors' opening and closing. A malfunctioning module could send a continuous open signal to the injector.
* High Fuel Pressure: Excessive fuel pressure can force the injector open even if the signal is correct. This could be caused by a faulty fuel pump, pressure regulator, or a clogged fuel line.
Other Potential Causes:
* Faulty Engine Control Module (ECM): The ECM manages engine functions, including fuel delivery. A faulty ECM could send incorrect signals to the injector.
* Vacuum Leak: A leak in the intake manifold or vacuum lines can create a false vacuum signal, leading to more fuel being injected.
* Faulty Throttle Position Sensor (TPS): The TPS tells the ECM the throttle position. A faulty TPS could send an incorrect signal, leading to increased fuel injection.
* Clogged Air Filter: A restricted airflow can lead to a rich fuel mixture, as the ECM compensates by injecting more fuel.
Diagnosis and Troubleshooting:
1. Visual Inspection: Look for any obvious signs of fuel leaks or damage to the injector or surrounding components.
2. Fuel Pressure Test: Check fuel pressure with a gauge to see if it's within the manufacturer's specifications.
3. Injector Test: You can use a fuel injector tester to check if the injector is opening and closing properly.
4. ECM Scan: Use an OBD-II scanner to check for any fault codes related to the fuel system.
5. Vacuum Test: Check for any leaks in the intake manifold or vacuum lines.
6. Throttle Position Sensor Test: Check the TPS's resistance using a multimeter to see if it's within specifications.
7. Air Filter Inspection: Make sure the air filter is clean and free of obstructions.
Remember, it's crucial to consult a qualified mechanic for a proper diagnosis and repair. Attempting to work on fuel systems can be dangerous, so always prioritize safety.
