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Old 08-07-2001, 03:46 PM
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Question 300D AC blowing hot

I have a 1980 300D with 345000 miles on it. the whole ac system has been replaced at one time or another and i feel like it is a vacuum problem keeping the thermostat from working. what cam I check to confirm or refute my theory? what color is the vacuum line that opperates the thermostat
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Old 08-07-2001, 05:15 PM
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Join Date: Jun 2001
Posts: 90
Check my topic, (fuses and their spring clamps) from yesterday it may be of help.
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Old 08-07-2001, 11:42 PM
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Join Date: Apr 2001
Location: Beech Island, S.C.
Posts: 468
The is no vacuum line for the thermostat in the A/C. There is a control amplifier and the temp wheel in the pushbutton control unit.
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