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#1
06-20-2006, 06:46 PM
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1995 E420 A/C - Hot air from side vents
Need help with A/C fix. Car is blowing hot air from the side vents and cold air from center vents. Delear diagnosed with heater valve left open and thereby resulting in hot air on the side.
How hard is to replace the heater valve, where is it located and what is correct part number? Also, one of the aux fan is not working. The recommended solution was to replace aux fans and relays (part number??). I can replace the aux fans but not aware where the relay are located. Any help would be appreciated? Thanks in Advance
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 Kamal Atwal 2005 Triumph Bonneville T100 (Black/white) [Sold] 2007 GL450 (Dersert Silver) 2009 Toyota Corolla (Metallic Silver) 2002 Tundra V8 - 2WD (Desert Sand) 1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center] 
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#2
06-21-2006, 08:10 AM
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The heater valve is a simple replacement. DON'T start that job unless the engine is cold. Located at the right rear of the engine compartment.
IF one of the aux fans is working then the relay is still good..no need to replace a good working part!
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
06-21-2006, 12:38 PM
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Is this correct part number for heater valve "R3022-26888" aka - ACC Mono Valve.
__________________
Kamal Atwal 2005 Triumph Bonneville T100 (Black/white) [Sold] 2007 GL450 (Dersert Silver) 2009 Toyota Corolla (Metallic Silver) 2002 Tundra V8 - 2WD (Desert Sand) 1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]
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#4
07-17-2006, 05:34 PM
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E420 Mono valve
Kamal,
I have the exact problem and was about to replace the mono-valve. Let me know if this worked for you??
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#5
07-17-2006, 06:57 PM
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I have not started doing the repairs. But, I am thinking of doing it over one of the long weekend holidays.
__________________
Kamal Atwal 2005 Triumph Bonneville T100 (Black/white) [Sold] 2007 GL450 (Dersert Silver) 2009 Toyota Corolla (Metallic Silver) 2002 Tundra V8 - 2WD (Desert Sand) 1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]
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#6
07-05-2007, 09:18 AM
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Monovalve
I have replaced Monovalve and problem is solved.
__________________
Kamal Atwal 2005 Triumph Bonneville T100 (Black/white) [Sold] 2007 GL450 (Dersert Silver) 2009 Toyota Corolla (Metallic Silver) 2002 Tundra V8 - 2WD (Desert Sand) 1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]
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Linear Mode
