Buick Lang Yue hot car has high idle speed.

Adjust the idle motor and check whether the intake pipe leaks.

1. Adjust the idle motor and clean the throttle. When the engine water temperature is low, air conditioning and engine voltage are low, ECU programming needs to increase the idle speed moderately.

2. Check whether the intake pipe leaks. There is air leakage, which will lead to high idle speed of hot car.