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  #1  
Old 06-02-2002, 03:29 PM
190D22's Avatar
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Location: Columbus, Ohio
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Recirculation Switch...

I don't seem to notice any difference at all when I have my recirc button on with the AC running. Could it be broken? Any tips or anything to add? Thanks.

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  #2  
Old 06-02-2002, 03:54 PM
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According to the owner's manual the recirculation switch is used to keep "offensive odors" from entering the cabin. When activated, the switch closes the fresh air vent for a period of 30 minutes, sealing the cabin from outside air. Very noticeable difference is noted especially when driving past a feedlot or dairy.

My kids refer to is as the "no stinky cow" switch.
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  #3  
Old 06-02-2002, 06:42 PM
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haha that's cute! Well that makes sense then! I thought it was a recirc like my jeep and practically everyone else's car that it pulls the inside air back in and cools it again and again and so on. Thank you for the reply!
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1984 190D 2.2 Auto 220k
2001 Jeep Cherokee Sport 70K
2004 Lexus RX-330 ??K
2005 Chrylser Crossfire LTD 6K

Play guitar? Go to www.cyberfret.com for free online lessons!
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  #4  
Old 06-02-2002, 10:42 PM
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Join Date: Jul 2001
Location: Old Lyme, Connecticut
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190D22,

That is how it works. I believe it may operate via electromagnetic/pneumatic actuators. The switch on the dash is electric and the timer is electric, but the actual piece that changes the arrangement of air ducting so you stop taking fresh air from the outside and start taking air in from inside the car is pneumatic. Normally when you hit the switch you can hear a difference in the air flow if the fan is on high. If you hear nothing, then you probably are not getting the intended action. I have no experience tearing the dash apart to find the faulty actuator or connector, but I think you will find others on the site who have done this successfully. Good luck, Jim
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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #5  
Old 06-02-2002, 10:59 PM
190D22's Avatar
Driver's Side lights
 
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Location: Columbus, Ohio
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I will really listen for an air flow change. It's 11:00 at night, so I can't do it now. I will give it a try tomorrow. Thanks for the reply!
__________________
1984 190D 2.2 Auto 220k
2001 Jeep Cherokee Sport 70K
2004 Lexus RX-330 ??K
2005 Chrylser Crossfire LTD 6K

Play guitar? Go to www.cyberfret.com for free online lessons!
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  #6  
Old 06-03-2002, 10:20 AM
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Join Date: Jun 2000
Location: Plano, TX
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Try activating the recirc switch with the blower locked onto low speed as well. Sometimes you can hear the doors moving about inside the climate control system. This is certainly the case on my 124.
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  #7  
Old 06-03-2002, 02:25 PM
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Driver's Side lights
 
Join Date: Apr 2002
Location: Columbus, Ohio
Posts: 876
I haven't tried it yet, but in the event that I don't hear anything moving, what will need replaced, how much will it cost, how hard is it to do?
Thanks
__________________
1984 190D 2.2 Auto 220k
2001 Jeep Cherokee Sport 70K
2004 Lexus RX-330 ??K
2005 Chrylser Crossfire LTD 6K

Play guitar? Go to www.cyberfret.com for free online lessons!
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  #8  
Old 06-03-2002, 05:37 PM
190D22's Avatar
Driver's Side lights
 
Join Date: Apr 2002
Location: Columbus, Ohio
Posts: 876
When I turn on the recirc I notice a whirring like a fan. So it appears to be working. Thanks for the help guys!

__________________
1984 190D 2.2 Auto 220k
2001 Jeep Cherokee Sport 70K
2004 Lexus RX-330 ??K
2005 Chrylser Crossfire LTD 6K

Play guitar? Go to www.cyberfret.com for free online lessons!
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