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Old 07-05-2005, 04:19 PM
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Join Date: Mar 2004
Location: Charleston, SC
Posts: 179
Warm at idle, cold at speed?????

MY Climate control is now working but I have noticed that it blows warm(ambient) air at idle and when I get to speed it blows cold. Any ideas what is causing this?

89 190E
Arctic white
Grey leather
Pirelli P400 rubber
Smoked corners
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Old 07-05-2005, 05:42 PM
Join Date: Aug 2000
Location: Holland, MI
Posts: 1,316
Assuming you mean in hot weather, when you want cooling...

A few things come to mind.

First, does your Auxiliary (electric) fan run? This is easy to check, open hood and look. At idle, it makes up for lack of 'ram' air through the condenser coils in front of the radiator.

Second, is there enough refrigerant?

Third, is it REALLY HOT out? There is a limit to how much cooling to expect at idle.

Check #1 and #2 above.

Others will add to this list.

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