What Causes Power Loss When the Air Conditioner is On?
2 Answers
The reason for power loss when the air conditioner is on is either a fault in the air conditioning system, such as issues with the thermostat or clutch, or if the air conditioner is functioning normally, it could be due to engine carbon buildup or spark plug failure. Here are detailed explanations of these two points: 1. Engine carbon buildup is a key reason for reduced vehicle power. When carbon deposits accumulate in the engine, the fuel system can become clogged, preventing the engine from operating normally and thus affecting the car's power output. 2. Spark plugs play a significant role, and different materials can achieve varying effects. Replacing spark plugs with high-quality ones not only extends their lifespan but also enhances power output efficiency.
I've been driving for over a decade, and I always feel the throttle becomes heavier when using AC in summer, especially in small-displacement cars. This is mainly because the AC compressor is driven by the engine, which immediately takes away 10-15% of the power once activated. It's like climbing a mountain with a backpack and suddenly stuffing a big watermelon inside—it's definitely more strenuous. The same goes for the car; the engine is already working, and the compressor steals power once turned on. This phenomenon is most noticeable when idling at a red light—the tachometer suddenly drops. Older cars especially need regular cleaning of throttle carbon deposits, and spark plugs should be replaced on time, as these help the engine handle the AC better.
