Hi.
Since the car is electronic injection and not carb engine you cannot regulate the idle manually. The idle fuel mixture to be injected is automatically determined by the ECU (the car main computer) depending on the inputs delivered from different parts. If the car is idling too high it means that there is a defective part.
Parts that must be tested are the following:
Idle air control valve and solenoid, also called IAC valve. The part is located on top of engine and determines amount of air to be injected when idle.
Vacuum system. The system has many different functions. Test the system for leaks that may result in lean mixture and other collateral problems.
O2 Sensors located in the exhaust system.
Air filter.
MAF sensor and IAT sensor located in the air intake.
Throttle position sensor.
Do also a diagnostic trouble code scanning. If there are codes stored they will help to identify the problem.
Regards.
Ginko
341 views
Usually answered in minutes!
×