Does idling the car with the air conditioning on have any impact on the vehicle?

[LeNoah]

Idling the car with the air conditioning on does have an impact on the vehicle. The following are the effects of car idling: 1. Idling can easily lead to oil burning: During idling, the throttle opening is small, and the vacuum level inside the intake manifold is high, which makes it easy to draw oil vapor into the intake manifold. Some of it deposits inside the intake manifold, especially in turbocharged models, where a pool of oil may be found behind the throttle in the intake manifold. However, this oil usually disappears after highway driving. 2. Idling can easily cause carbon buildup: During idling, the air-fuel mixture tends to be richer. Prolonged idling with a richer mixture can lead to engine carbon buildup. Additionally, during stop-and-go driving at low speeds, the engine alternates between enriching and reducing fuel injection, which also contributes to carbon buildup.