1. Check the spark plugs and wires: Worn or damaged spark plugs and spark plug wires can cause misfires, leading to rough idling and stalling. Inspect the spark plugs for signs of wear or fouling and replace them if necessary. Also, check the spark plug wires for cracks or damage and replace them if needed.
2. Check the fuel filter: A clogged fuel filter can restrict fuel flow to the engine, causing it to run lean and stall. Inspect the fuel filter and replace it if it's dirty or clogged.
3. Check the air filter: A dirty or blocked air filter can limit airflow to the engine, causing it to run rough and stall. Inspect the air filter and replace it if it's dirty or clogged.
4. Clean the throttle body: A dirty throttle body can cause the engine to idle roughly and stall. Clean the throttle body using a throttle body cleaner and a clean rag.
5. Check the fuel pressure: Low fuel pressure can also cause rough idling and stalling. Use a fuel pressure gauge to check the fuel pressure and compare it with the manufacturer's recommended specifications. If the fuel pressure is low, you may need to replace the fuel pump or other components in the fuel system.
6. Check the ignition coils: Faulty ignition coils can cause misfires, leading to rough idling and stalling. Test the ignition coils using a multimeter and replace any that are defective.
7. Check the fuel injectors: Clogged or malfunctioning fuel injectors can disrupt the proper flow of fuel into the engine, causing it to run rough and stall. You can have the fuel injectors cleaned or replaced if necessary.
8. Get a professional diagnosis: If you've tried the above steps and the problem persists, it's best to have your car diagnosed by a professional mechanic. They can use diagnostic tools and have the expertise to identify the exact cause of the problem and provide the appropriate solution.
Remember that rough idling, stalling, and jerking can be caused by various issues, and the exact solution depends on the underlying problem. If you're not comfortable performing these checks yourself, it's best to consult a qualified mechanic.
