Kia Optima intermittent stalling issue when accelerating from a stop with no diagnostic codes available on Kia Optima

Some Kia Optima owners report experiencing intermittent stalling issues when accelerating from a stop, even in the absence of diagnostic codes. These owners suggest that potential causes may include fuel system problems, such as contaminated gas or water in the gas tank, which can lead to engine stalling. Additionally, issues with the ignition system, such as ignition failures, are also reported to contribute to stalling. Common culprits for these intermittent stalling episodes may involve a malfunctioning idle speed control system, low fuel pressure, loss of ignition, or vacuum and EGR leaks. Furthermore, specific components like the crankshaft position sensor, ignition control module, or coil primary voltage supply circuit may be intermittently faulty. It is recommended that owners seek a thorough inspection of the fuel and ignition systems, along with relevant components, to effectively diagnose and resolve these stalling issues. Consulting a qualified mechanic or technician is advised for a comprehensive diagnosis and repair plan.