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#1
05-19-2008, 11:29 PM
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Cllimate Control
Ok folks.. I know this is a common problem but I am not finding the answers. I have a 1978 300d. When I got it there was no heat and no AC. The blower would blow on Defrost. I just picked up a Contol Servo off of Ebay.. has aluminum housing. I installed and all the buttons function high, low split defrost. But it seems to be AC and no heat, no matter where the dial is turned. Any places to start looking.. Vacuum leaks? Etc? Summer is here so the AC will be great, but soon will need heat.. Thanks so much..Marc
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#2
05-20-2008, 08:20 PM
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You may have a plugged heater core, or a bad temp wheel, or a bad dash sensor, or a bad heater box sensor. The DEF setting will override all of these except the plugged heater core.
__________________
Chuck Taylor Falls Church VA '66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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Linear Mode
