Quote:
Originally Posted by RaceFaceXC
Keep in mind that the windshield defrost setting will use the A/C compressor to dry the air, no matter what the thermostat knob is set at, so you may notice high/fluctuating idle with the windshield defrost selected and the fan speed set to anything besides 0 (zero).
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Yes, I'm well aware of this. Problem is the idle fluctuates much more than normal on random occasions. As I said normally it rises to 900-1k or so, when it's acting up it will hit 1500-1700 quite often. This issue only surfaced in the past 5k miles or so.