수리 사례

2026. 6. 30. 작업

증상

Why might I experience a power falloff after starting my car with the AC On?

처리 내용

Air Conditioners are run by a belt that is connected to the crankshaft. The engine turning causes the A/C Compressor to move. When your A/C is not turned on, a clutch disengages the A/C Compressor's internals from the pulley on the belt. This allows that belt to free spin, not adding load onto the engine. When the A/C is turned on, that clutch is engaged and so the internals of the A/C Compressor are driven, this does add load to the engine. If this is a new symptom, then it is a sign that the compressor is adding more load to the engine then it used to and could be signs of a failing compressor, the pulley starting to seize, need for lubrication, etc. If it has always been this way and you are just curious as to why, it is simply additional strain being put on your engine by the A/C. The fact that it has more of an impact at first start then once moving is not surprising. Your engine is not warmed up yet and not at its optimal running condition yet. A/C systems impact the performance