Possible Causes:
* Faulty Mass Airflow Sensor (MAF): This sensor measures the amount of air entering the engine. A malfunctioning MAF can lead to a lean or rich fuel mixture, causing rough running and stalling.
* Dirty or Faulty Throttle Position Sensor (TPS): This sensor tells the engine control module (ECM) the throttle position. A dirty or failing TPS can cause erratic engine behavior.
* Failing Crankshaft Position Sensor (CKP): This sensor tells the ECM the crankshaft's position, crucial for ignition timing. A bad CKP can cause misfires, rough running, and stalling.
* Spark Plugs and Wires: Worn-out spark plugs or damaged ignition wires can cause misfires, leading to stalling.
* Fuel System Issues: Problems with the fuel pump, fuel filter, or fuel injectors can restrict fuel delivery, resulting in stalling. A clogged fuel filter is a common culprit.
* Vacuum Leaks: Leaks in the vacuum system can disrupt the engine's operation and cause stalling.
* Low Engine Coolant: Overheating can severely damage the engine and cause stalling. Check your coolant level immediately. Do not open the radiator cap while the engine is hot.
* Transmission Problems: While less likely to directly cause the check engine light, transmission issues can feel like stalling, particularly if the transmission is shifting erratically or slipping.
* Oxygen Sensor(s): A faulty oxygen sensor can cause incorrect fuel mixtures, impacting performance and leading to stalling.
What You Should Do:
1. Do NOT ignore the check engine light. Get it diagnosed *immediately*.
2. Obtain a diagnostic trouble code (DTC). This code, retrieved using an OBD-II scanner (available at auto parts stores), will provide clues about the problem. This is the single most important step.
3. Avoid driving long distances. Continued driving with a stalling problem could cause further damage.
4. Have a qualified mechanic diagnose and repair the problem. Based on the DTC, a mechanic can pinpoint the faulty component and perform the necessary repairs. Trying to fix it yourself without proper knowledge could worsen the situation.
5. Consider the age of your vehicle: Repair costs may outweigh the value of your vehicle, especially if multiple components are failing. A thorough inspection from a mechanic is crucial in assessing repair vs. replacement.
The feeling of stalling is a serious symptom and shouldn't be dismissed. Get it checked out promptly to ensure your safety and avoid costly repairs down the line.
