- Vacuum leak: A vacuum leak can cause the engine to run lean, which can lead to a rough idle. Check for any loose or cracked hoses in the vacuum system.
- Fuel injector problems: A faulty fuel injector can cause the engine to misfire, which can also lead to a rough idle. You can try cleaning the fuel injectors or replacing them if they are damaged.
- Spark plug problems: Worn out or fouled spark plugs can cause the engine to misfire, which can lead to a rough idle. Check the spark plugs and replace them if they are needed.
- Throttle body problems: A dirty or faulty throttle body can cause the engine to idle rough. You can try cleaning the throttle body or replacing it if it is damaged.
- PCV valve problems: A stuck or faulty PCV valve can cause the engine to idle rough. Check the PCV valve and replace it if it is needed.
If you are unable to diagnose the problem yourself, you can take your car to a mechanic for further diagnosis and repair.
