Quote:
Originally Posted by Juiced46
Completely normal. When you turn the A/C on its going to bump the idle up a tad. The slight fluctuation and the feeling you are getting is because the A/C compressor clutch is turning on and off. There is nothing wrong with your car.
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I disagree...
The compressor does not turn on/off every 15 sec, and at the constant rate.
These are not "small" fluctuations.
And, as the OP pointed out, the other day the phenomena was gone...
I have never seen anything like that, my AC is on 100% of time and in the summer, we've had 100+ degreed every day...