i still have it312d if that part in your photos is still available ill love to have it!
-lessline99
i still have it312d if that part in your photos is still available ill love to have it!
-lessline99
The recirculate actuator has a vaccuum control solenoid that is connected to the Temperature control head unit. This is a simple 12v on/off control signal. If you pull the center console out you can access the wiring harness for the ATC unit. Cut the correct wire and connect it to a switch. When the solenoid receives 12V the recirculate door is closed.I also had a broken actuator arm. Went to local wrecking yard and salvaged actuator assembly from a Fed Ex truck wreck. $35 As BC339 points out. It is harder than you'd think! MB and most new vehicles will not allow recirc. indefinitely, usually open recirc door after 10-20 min. Must be a way to overide?
lever parts given today, gone to Pennsylvania.
But it might get a partial repair.... My 2004 will likely never get the attention that it should. Given no A/C, wired into place works fine for the 2004.
Added:As was mentioned. it depends upon where the door is positioned.... Do you you know if resealing the door would cause issues with vehicle performance or AC cabin air flow?
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Wired/sealed to outside air.
Positioned in (furthest from you) it will always be on outside makeup air. During really hot/humid ambient temperatures the A/C may not keep up well because it is always pulling hot moist air which is hard to cool.
Wired/sealed to re-circulation.
Positioned out (closest to you) the blower will always be pulling air from inside your vehicle cabin (re-circulated). During hot/humid ambient conditions the A/C will keep up better because the already cooled and dehumidified air is being re-circulated back to the blower. With no outside (makeup) air being pulled in the air quality may be compromised. Older vehicle air conditioners didn't use full outside air. If you seal the diverter door to re-circulation and are concerned about air quality, crack a window. (Does your home air conditioning system have outside makeup air? Most don't.)
Assuming a typical operator lever assembly failure, the diverter door swings freely. That results in a combination of air sources being pulled in by the blower. The outside air has less resistance to flow so mostly you will get outside air.
The position of the re-circulation door doesn't affect the operation of the cabin inside vents or diverters.
vic
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[Mice inside?] Check your diverter door operator in the cabin fan housing.
While contemplating other cabin HVAC system issues, it occurred to me that a broken diverter door operator would let the diverter door stay open to provide a nice entry point for critters. That said, if your diverter door operator system fails, the logical temporary repair is to wire the diverter door in the outside air position. That keeps the door closed to new critter entry. (Except, any that have already found and used the entry point will chew through most anything to get back into their home.)
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Really? I just assumed thats how it was, yes radiator is always warmThe damper can be wired shut. If you are getting radiator flow before about 180F, you need a new thermostat.
One concern that I would have is possible easier access for rodents. When the system is working, the door is closed to the interior air system. The rodents can still get in past the squirrel cage fan, but it is a bit more of a challenge. (The fan is aptly named in this case. It will at least keep squirrels at bay, but not little cousins.)Has anyone thought about somehow reversing the bellcrank/actuator/spring mechanism so that the door is open when the button is pressed, and is in recirc by default? ...
??? the door is normally open.....pushing the button closes itOne concern that I would have is possible easier access for rodents. When the system is working, the door is closed to the interior air system. The rodents can still get in past the squirrel cage fan, but it is a bit more of a challenge. (The fan is aptly named in this case. It will at least keep squirrels at bay, but not little cousins.)
Then again, maybe the position of the diverter door really doesn't matter.
vic