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  #1  
Old 08-23-2002, 07:01 PM
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W140 AC Question

I drive a 93 300SE. The dual Climate Controls have worked fine until now. When i turn the air conditioning to dual auto mode, and i turn the rotary dial in the center from "AUTO" to "MAX", i lose the blower motor. Is there a seperate relay for the Max and Auto functions? Is this a simple fix? Or is this gonna cost me $6000 and a new Evap. core?
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Old 08-23-2002, 07:12 PM
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Electronic blower regulator sounds bad. Apparently not uncommon as MB has issued an improved part. The new # is 140 821 83 51 , I believe (double check). The blower goes to highest when temp wheel turned to "MAX" and your highest circuit would seem to be out.

Edit:.... looks like joe p already addressed this issue in another thread... look there.
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Last edited by jbaj007; 08-23-2002 at 07:17 PM.
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Old 08-23-2002, 07:38 PM
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Alright then, one more question

Is this a cheap part, where is found at on the car, and will the labor price be incredible?
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Old 08-23-2002, 08:22 PM
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Check the previous thread A/C w140 93 400 SEL
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Old 08-24-2002, 01:59 AM
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OH, I see it now.....

Thank You!
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