Why a car starts but shutdown when foot is removed from accelerator 2000 kia sephia?

If your 2000 Kia Sephia starts but shuts down when you remove your foot from the accelerator, it could be due to several issues. Common causes include a faulty idle air control valve (IAC), which regulates the engine's idle speed, or a vacuum leak that disrupts the air-fuel mixture. Additionally, problems with the fuel system, such as a clogged fuel filter or failing fuel pump, can also lead to stalling. It's advisable to have the vehicle diagnosed by a professional to pinpoint the exact cause.