Hyundai Sonata intermittent starting issue with idling and stalling after fuel pump, starter, and coil pack replacements on Hyundai Sonata

Some Hyundai Sonata owners report experiencing intermittent starting problems, idling issues, and stalling even after replacing the fuel pump, starter, and coil pack. These ongoing issues may be attributed to a faulty fuel pump relay, which can cause intermittent power loss to the fuel pump, leading to starting difficulties and stalling. Additionally, a malfunctioning starter solenoid can hinder engine startup, while a weak or dead battery may also contribute to starting problems. A faulty alternator can further impact vehicle performance, exacerbating these issues. Furthermore, problems with spark plugs or the ignition system can lead to idling issues and stalling, and electrical or wiring problems may also play a role in these intermittent starting challenges. Given the complexity of these issues, it is advisable for owners to seek professional assistance or consult a Hyundai dealership for a comprehensive diagnosis to effectively address these persistent problems.