How to Adjust the Idle Speed of Toyota Corolla

Toyota Corolla's idle speed system is automatically adjusted by computer, and cannot be adjusted manually or mechanically. If the idle speed system is abnormal, the throttle valve is dirty, causing the throttle valve to be stuck, which will make the idle speed abnormal. Cleaning the throttle can restore the normal state of idle speed. The specific operation steps are as follows:

1. Remove the throttle retaining clip.

2. Pull off the throttle hose.

3. Clean up the dirt with a brush.

4. Spray the throttle with throttle cleaner.

5. After cleaning, replace the air inlet hose.