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Old 12-18-2000, 07:28 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
W201 chassis uses a vacuum heater valve. Vacuum shuts the valve OFF. It is under the plastic air intake grill under the hood, on the passenger side of w/s wiper mech. Disconnect vacuum line from valve w/warm engine to see if valve still works.
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