A/c

[Qpats]

I have a couple of questions for you guys.

When my air conditioning is on, it makes a whining sound when I accelerate. The car will hesitate also under acceleration. If I turn the a/c off, all the symptoms disappear.

I also notice that when my car is warming up, just a little bit before it reaches its normal operating temperature, the idle will be very low sometimes -550 or 600. It will go away and idle fine when it is fully warmed up.

One last question: why do my brakes squeak and feel weak when the car has just been turned on. When the car is warmed up, it brakes fine.

[gcs118]

The car hesitates under acceleration moreso when the A/C compressor is used because it is another load on the engine, taking away power. Your brakes most likely squeak in the morning from the little bit of surface rust/buildup that forms overnight.