What does it mean if your 2005 Taurus won't idle?

If your 2005 Taurus won't idle, it could indicate several potential issues, such as a malfunctioning idle air control valve, a dirty throttle body, or a vacuum leak. Additionally, problems with the fuel system, such as a clogged fuel filter or failing fuel pump, could also affect idling. It’s advisable to perform a diagnostic check to identify the exact cause and address it promptly to prevent further engine issues.