* Fuel Delivery Problems:
* Clogged Fuel Filter: A clogged fuel filter restricts fuel flow to the engine.
* Fuel Pump Failure: The fuel pump may be weak or failing, unable to supply enough fuel under pressure.
* Bad Fuel Injector(s): One or more fuel injectors might be clogged or malfunctioning, preventing fuel from being sprayed into the cylinders.
* Low Fuel Pressure: A pressure regulator problem or other issue could lead to insufficient fuel pressure.
* Ignition System Problems:
* Spark Plug Issues: Worn, fouled, or damaged spark plugs can prevent proper combustion.
* Ignition Coil Problems: A failing ignition coil may not be delivering sufficient voltage to the spark plugs.
* Ignition Control Module (ICM) Failure: The ICM controls the ignition system; a failure here can prevent the engine from firing properly.
* Air Intake Problems:
* Mass Airflow Sensor (MAF) Failure: A faulty MAF sensor provides inaccurate air/fuel mixture information to the engine's computer, leading to poor performance.
* Throttle Position Sensor (TPS) Failure: A faulty TPS might not be correctly communicating throttle position to the engine control unit (ECU).
* Clogged Air Filter: A severely clogged air filter restricts airflow, hindering combustion.
* Other Possibilities:
* Vacuum Leaks: Leaks in the intake manifold vacuum system can disrupt engine operation.
* Transmission Problems (Automatic): While less likely given the idling ability, a serious transmission issue could prevent power transfer even if the engine is running.
What to do:
1. Check the obvious: Make sure you have enough fuel.
2. Check engine codes: Use an OBD-II scanner to read any diagnostic trouble codes (DTCs) stored in the car's computer. These codes can pinpoint the problem area.
3. Consult a mechanic: This is not a problem you should try to diagnose and fix yourself unless you have significant automotive experience. The underlying issue could be complex, and improper repair attempts can lead to further damage.
Ignoring the problem can lead to further engine damage, so it's crucial to have it checked by a professional as soon as possible.
