Fast Idle Or Run-On

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Mazda Tribute, 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, and 2003 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Check for ECT sensor malfunction.
Check for air leakage from intake-air system.
Check for throttle body malfunction.
Check for APP sensor misadjustment.
Check for cruise control system operation improperly.
Check for improper operation of electronic throttle control system.