* Ignition system issues: Spark plugs and ignition coils can also cause a rough idle if they are worn out or damaged.
* Vacuum leaks: A vacuum leak can cause a rough idle by allowing unmetered air to enter the engine.
* Exhaust system issues: A faulty catalytic converter or exhaust system leak can also cause a rough idle.
* Engine mechanical issues: Worn or damaged engine components, such as piston rings or valves, can also lead to a rough idle.
