Quote:
Originally Posted by pmellc
. . . I have a 1991 300D 2.5 Turbo. I suddenly have cold air (AC?) from the side vents and lower vents while the setting is on heat. . .
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and one additional question: do you have heat at any vent and at any setting? As Jeff wrote, "Defrost" should give you maximum heat and maximum fan speed with air to the windshield and side vents. If you are getting no heat at all under any circumstances then I would first check the monovalve.
Jeremy
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"Buster" in the '95
Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
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"Oh lord won't you buy me a Mercedes Benz."
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