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Re: cabin fan/ recir (vent door)
Posted by MS (more from MS) on Tue, 2 May 2006 10:33:18
In Reply to: cabin fan/ recir (vent door), john88, Tue, 2 May 2006 02:22:25
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The door/flap I have some insight about, the switch not so much isight. If you look at the door, it's basically a mechanical setup. The door itself, plus the vacuum powered control unit with a lever attached to move the door. When the switch is set to circulation, the door should shut completely. If not, the door might be binding somewhere, the vacuum control unit is dead or dying, or the lever arm and it's connecting point on the flap is bent or the holes have enlarged. You can try and refurbish things by taking that mechanical features apart, seeing how the door closes manually and where it might be binding, plus cleaning and lubing the exterior of the control unit with WD40, and possibly straightening any bent metal parts. The internal dash vent control switch I know is basically a mechanical selector to direct vacuum to the various dash vent doors. If you hear hissing behind the dash near that switch while driving, or behind the dash somewhere, that's an obvious indication of a bad switch or a ruptured/disconnected vacuum line. The electric control switch for the fan - that I don't have much experience with, but like most elec switches, it either works or it doesn't. Replacing is the only way I know to fix a problematic switch.
posted by 207.200.116...
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