Why does the Envision shake at idle when the air conditioning is on?

[NathanLynn]

The reasons for the Envision shaking at idle when the air conditioning is on are as follows: 1. Carbon buildup in the throttle body: Carbon deposits can obstruct the engine's air intake, causing the engine to struggle or barely manage to drive the compressor, resulting in idle shaking. 2. Large throttle angle: This can lead to excessive air intake, causing the engine to shake and lack power during acceleration when starting. 3. Issues with the ignition system: For example, poor spark plug performance can lead to unstable idle. Relevant information about car idle is as follows: 1. Car idle: Refers to an operating condition. When the engine is running without load, it is called idle, meaning the car is in neutral gear. The engine speed during idle is referred to as idle speed. 2. Adjustment: Idle speed can be adjusted by modifying the throttle opening size, among other methods, to increase or decrease it.