Hyundai Elantra Coupe rough idle issue on Hyundai Elantra Coupe

Some Hyundai Elantra Coupe owners report experiencing rough idle issues due to several common factors. These include worn-out spark plugs or ignition system problems, such as faulty ignition coils or wires, which can lead to misfires. Additionally, issues with the fuel system, like a dirty fuel filter or clogs, may contribute to the rough idle. Vacuum leaks are also frequently cited as a cause. Damaged engine components can further disrupt smooth engine operation at idle. Owners with an illuminated check engine light are advised to check for stored codes to identify specific issues. Battery health is another area to consider, as battery problems can sometimes lead to rough idling. A dirty air filter and a malfunctioning mass air flow sensor (MAF) may also negatively impact the air-fuel mixture, contributing to the problem. Lastly, a dirty or malfunctioning throttle body can restrict airflow, resulting in stalling and rough idle. Addressing these potential causes can help owners effectively troubleshoot and resolve rough idle issues in their Hyundai Elantra Coupe.