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        Old 27th November 2001, 17:28   #1 (permalink)
        ppezaris
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        AC fan level too low when set to auto?

        When running the AC, I've always thought that the fan level didn't change "enough" according to the temperature differential between the car's interior, and the temperature that was selected on the dash.

        So yesterday I did an experiment:

        In 85 degree heat, I drove my beast for about ten minutes with the windows down and the AC off to make sure the temperature of the interior was the same as the exterior. Then I rolled up the windows, turned on the AC and manually adjusted the temperature on both sides down to sixty (the lowest possible setting).

        The fans turned up to about half speed for 30 seconds or so, then actually slowed down one or two "blips". At no time did the fan go faster than half speed.

        Is this normal? Is this expected?

        When I turn on the "Max" button, the fans go to full throttle as expected. But I'm wondering with such a large temperature differential why the fans didn't go over half when I was doing my experiment

        Last edited by ppezaris; 27th November 2001 at 17:30.
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        Old 27th November 2001, 18:50   #2 (permalink)
        PhilSeastrand
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        This doesn't jive with my experience. I would expect the fan to come on full under these conditions. To further test this, I suggest you close up the car and let the interior get as hot as practical (sit it in the sun for an hour should do it if the outside temps are 85). Then see what happens. I know in Roseville when the outside temp is high and the car has been sitting, the fans will come up to full power with the AC on.
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