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W203 Airconditioning Problem

sv4

New Member
Joined
Sep 23, 2005
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I have a problem with the AC in my C230K that has left my regular independent mechanic stumped. On first start in the morning ( or after leaving the car parked for 5-6 hours ), the AC will only start blowing cold air after 6-10 minutes although the fan starts immediately. Previously, the cool air would come on fairly quickly, at least within a minute of turning on the AC. Once the cool air comes on, though, the AC performs very well. The AC would then also blow cool air almost immediately after short periods of stopping/restarting the car.

Full check on the airconditioning system revealed no leaks and refrigerant remains fully charged. Winstar diagnostics revealed a faulty evaporator temperature sensor which was promptly replaced. However,while further diagnostics revealed no more faults, the proble, persists. I would appreciate any suggestions, thanks.
 
Probably a jammed TX valve. To replace it you will also need a new drier element as the system will have been cracked open.
 
Thanks, Miro. Is this TX valve inside the receiver/drier that is housed within the dashboard?
 

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