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Old 02-08-2002, 01:54 PM
Posts: n/a
Exclamation My heater is not right

My heater works sort of. As long as I leave the fan on low I get heat out of my heater where it is supposed to be, but when I turn fan on high by the swich or by turning on the deforster it gets cold in about 15 seconds. After doing a search I keep seeing the mono valve being a problem with heat. Can that cause the problem I am having? The problem is on my '91 300SE.

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