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  #1  
Old 12-19-2000, 09:04 PM
Tom Pawlik
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I just bought a 95 E420. In the auto position the temperature wheel does not change the temperature quickly like my old M-B and when the wheel says 65 degrees, hot air is still blowing. Cold air will not blow without moving the wheel to the coldest setting. Is it the monovalve or the pushbutton unit?
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  #2  
Old 12-19-2000, 09:36 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
It might not be either one. You may have a problem with the aspirator or the inside temp sensor.

I would have it checked.
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  #3  
Old 12-20-2000, 06:27 PM
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Join Date: Mar 1999
Location: Tucker, Ga USA
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Or if the mono heater starts to hydro-lock, due to bad diaphram.
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  #4  
Old 12-26-2000, 11:51 PM
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Join Date: Dec 2000
Location: Mountain Island Lake, Charlotte NC
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Mr. Moderator,
I have the same problem with my 86 560sl. Is this the same as the aformentioned problem with the e420? The guage seems like it is heating only when on max.
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2004 VW Passat GLS TDI-50k
2006 Honda Odyssey EX-L 7k
FOR SALE 1991 300TE 228k

2003 Subaru Outback 57k Silver/Black-SOLD
2005 C230K 18k Pewter/Grey-SOLD
1997 E420 108k Black/Grey-SOLD
1986 560sl 200k Black/Palimino-SOLD
1985 300sd 340k-SOLD
1979 240d 170k-SOLD
2000 Volvo V70XC-POS couldn't sell fast enough
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  #5  
Old 05-28-2003, 10:37 PM
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Join Date: Dec 2000
Location: Mountain Island Lake, Charlotte NC
Posts: 376
MB Doc?
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Rob Armstrong, Charlotte, NC
Mountain Island Lake
RobAinCLTNC@hotmail.com

2004 VW Passat GLS TDI-50k
2006 Honda Odyssey EX-L 7k
FOR SALE 1991 300TE 228k

2003 Subaru Outback 57k Silver/Black-SOLD
2005 C230K 18k Pewter/Grey-SOLD
1997 E420 108k Black/Grey-SOLD
1986 560sl 200k Black/Palimino-SOLD
1985 300sd 340k-SOLD
1979 240d 170k-SOLD
2000 Volvo V70XC-POS couldn't sell fast enough
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