* Mass Airflow Sensor (MAF) Issues: A faulty MAF sensor provides inaccurate readings of the air entering the engine. This can lead to a lean or rich fuel mixture, causing stalling, especially under load.
* Throttle Position Sensor (TPS) Problems: Similar to the MAF sensor, a faulty TPS provides inaccurate information about the throttle position. This can lead to incorrect fuel delivery and stalling.
* Crankshaft Position Sensor (CKP) Failure: The CKP sensor tells the engine's computer where the crankshaft is in its rotation. A malfunctioning CKP can prevent proper ignition timing and fuel injection, leading to stalling.
* Camshaft Position Sensor (CMP) Failure: Similar to the CKP, a faulty CMP sensor can disrupt ignition timing and fuel delivery.
* Supercharger System Issues: This is a key area to investigate given the car's supercharged nature:
* Supercharger Belt: A slipping, broken, or loose supercharger belt will deprive the engine of boost and could lead to stalling.
* Intercooler Issues: Leaks in the intercooler system can cause a loss of boost pressure.
* Boost Pressure Sensor: A faulty boost pressure sensor provides inaccurate readings to the engine's computer, potentially leading to stalling.
* Supercharger itself: While less common, a failing supercharger component could cause intermittent power loss and stalling.
* Fuel Delivery Problems:
* Fuel Pump: A weak or failing fuel pump may not deliver enough fuel under load, causing stalling.
* Fuel Filter: A clogged fuel filter restricts fuel flow.
* Fuel Injectors: Clogged or malfunctioning fuel injectors can disrupt fuel delivery.
* Ignition System Issues:
* Spark Plugs/Wires: Worn spark plugs or damaged wires can lead to misfires and stalling.
* Ignition Coil: A failing ignition coil can prevent sparks from reaching the cylinders.
* Vacuum Leaks: Vacuum leaks disrupt the engine's operation and can cause a variety of problems, including stalling.
* Low Battery Voltage: While less likely to cause *immediate* stalling, a low battery could cause problems that lead to stalling under load.
Troubleshooting Steps:
1. Check Engine Light (CEL): If the CEL is on, get the codes read using an OBD-II scanner. This will provide clues to the problem.
2. Visual Inspection: Inspect the supercharger belt for wear or damage. Look for any obvious vacuum leaks or loose connections.
3. Professional Diagnosis: Given the complexity of the supercharged system and the potential for multiple issues, it's highly recommended to take the car to a qualified mechanic specializing in older vehicles or supercharged engines. They have the diagnostic tools and expertise to pinpoint the problem effectively.
Stalling while driving is a serious issue, and continued driving could cause further damage. Don't attempt extensive repairs yourself unless you have significant mechanical experience. Prioritize getting a professional diagnosis and repair.
