Why does the Buick Excelle shake severely when the air conditioning is turned on?

1 Answers
DeMarcus
07/24/25 3:26am
When the air conditioning is turned on during normal vehicle use, the operation of the air conditioning compressor increases the engine load, causing the engine speed to drop and resulting in noticeable vehicle shaking. Idle Speed Boost Device: Most vehicles are equipped with an engine air conditioning idle speed boost device. When the air conditioning compressor is operating, the air conditioning system simultaneously sends a command to increase the engine speed to the required range, thereby resolving the issue of engine shaking when the air conditioning is on. Main Faults: Engine surging accompanied by shaking is a common and challenging automotive issue. The primary cause is often excessive tire inflation. Appropriately increasing the tire inflation requirement can reduce rolling resistance and save fuel when the tire is overinflated.
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