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Old 01-06-2003, 05:57 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
ON the W201 chassis this ticking is a common PROBLEM. The feed-back potientiometer for the blend-air door will get a bad spot & then you will hear this ticking from the switch-over valve group. YOU need a new feed-back resistor.
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