Fuel System:
* Fuel pump: A weak or failing fuel pump might not supply enough fuel under acceleration. This is a common cause.
* Fuel filter: A clogged fuel filter restricts fuel flow, leading to stalling under load.
* Fuel injectors: Clogged or faulty injectors can prevent proper fuel delivery. This is more likely to cause rough running and hesitation *before* stalling, but can certainly cause a stall under acceleration.
* Fuel pressure regulator: A malfunctioning regulator can cause incorrect fuel pressure, leading to inconsistent fuel delivery.
Ignition System:
* Distributor cap and rotor (if applicable): Cracks or corrosion in these components can interrupt the spark, causing misfires and stalling. (Less likely on a later model Stealth with coil packs)
* Ignition coil(s): A failing coil(s) won't produce a strong enough spark, leading to misfires and potential stalling.
* Spark plugs and wires: Worn, fouled, or damaged spark plugs and wires can prevent reliable ignition.
* Crankshaft Position Sensor (CKP): This sensor tells the engine where the crankshaft is. A faulty CKP can cause the engine to misfire or stall, especially under load.
* Cam Position Sensor (CMP): Similar to the CKP, a faulty CMP sensor can cause similar problems.
Air Intake System:
* Mass Air Flow (MAF) sensor: A dirty or faulty MAF sensor provides inaccurate air/fuel mixture information to the engine computer, resulting in poor performance and stalling.
* Throttle Position Sensor (TPS): A malfunctioning TPS provides incorrect information about the throttle position, disrupting the engine's air/fuel mixture.
* Vacuum leaks: Leaks in the vacuum lines can disrupt the engine's operation and lead to stalling.
Other Possibilities:
* Transmission Issues (Automatic): Problems within the automatic transmission can cause the engine to stall under acceleration. This is less likely, but possible.
* Computer Issues (PCM/ECM): A faulty engine control module (PCM or ECM) can cause various problems, including stalling. This is usually a more advanced diagnostic situation.
Troubleshooting Steps:
1. Check the basics: Start with the simplest things:
* Fuel level: Is the tank low?
* Battery: Is the battery charged and the connections clean?
2. Visual Inspection: Look for any obvious damage to vacuum lines, wiring, or components.
3. Diagnostic Codes: Use an OBD-II scanner to retrieve any diagnostic trouble codes (DTCs) stored in the engine computer. This is often the quickest way to pinpoint a potential issue.
4. Professional Diagnosis: If you're not comfortable working on your car yourself, take it to a qualified mechanic. They have the tools and expertise to diagnose and repair the problem accurately.
The year and model of your Dodge Stealth will help narrow down the potential causes. Some problems are more common on certain model years. Providing this information will allow for more specific advice.
