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Old 08-09-2003, 05:27 PM
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1991300SEL 1991300SEL is offline
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Join Date: May 2003
Posts: 497
Regarding the rough running with the a/c on.

I found an old post(1999) - 300SD. Benzmac suggested that the aux. fan operation be verified. If the 2 fans in front of the condensor are not coming on, refrigerant presure will build up and cause rough running.
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