How to match the unstable idle speed of Buick LaCrosse cleaning throttle?

You need to cooperate after cleaning the throttle, otherwise there may be problems such as high idle speed and increased fuel consumption. The Engine Adjustment Module (ECM) reads the idle position of the throttle body to ensure accurate idle operation. Every time the engine control module or throttle body is replaced, the idle position must be read to prevent engine idling instability or DTC. The throttle matching method of Buick LaCrosse is as follows: 1. Clear the DTC with a scan tool; 2. Turn off the ignition switch for 30 seconds; 3. Connect the ignition switch and turn off the engine for 60 seconds; 4. Turn off the ignition switch; 5. Turn off the engine and connect the ignition switch. Now most cars don't need to match the throttle separately. After the vehicle runs for tens of kilometers, the ECM of the engine adjustment module will automatically match the throttle data.