When ever i have been trying to turn on the air conditioning in my car the car makes a horrible grinding noise and will only blow hot air if i am idling. when i accelerate it starts to blow cold air but if i stop at a red light it will start blowing warm air and then hot air. also my car seems to run a lot harder when the air is on and i try to drive it. if i am stopped at a light and i have the brake on the car will make a sound like the fan is turning on to cool the car down and it will slightly jerk forward like i am pressing the gas. what's going on?
Sounds like your air conditioner clutch is going. It will make it run bad because it is putting such a burden on all the rest of the accessories.
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