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Old 01-14-2013, 12:20 PM
twc1955 twc1955 is offline
Dodge Ram Forum Newcomer
Join Date: Dec 2012
Location: Blacksburg
Age: 60
Posts: 2
Gender: Male
Vehicle: 2003 Dodge Ram 1500
Trim Level: SLT
Color: Green
Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
Rep Power: 0
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Smile 2003 HVAC Issue

My '03 quad cab has an HVAC issue that I am troubleshooting and I'd sure like some help.

First, I have verified that all the doors operate as they should and have replaced the recirc door. I still seem to have this problem: The passenger vents blow hot when the heat and vents are on but the driver side blows luke warm at best. Also, when the temp knob is set all the way to cold the passenger vents still blow some heat. I don't know what a "DUAL ZONE" system is supposed to look like but I don't think I've got it. And I'm not trilled at the prospect of removing the dash again but...

Any ideas?
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Old 01-14-2013, 12:53 PM
seanbeckaroo seanbeckaroo is offline
Dodge Ram Forum Senior Member
Join Date: Nov 2012
Location: Ohio
Age: 38
Posts: 256
Gender: Male
Vehicle: 2009 Ram 1500 Crew Cab
Trim Level: SLT-Big Horn
Color: Blue, Sexy Blue
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
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Sounds to me like a plugged coil. Pull the hoses off and flush that bad boy out. Start there, then start chasing blend doors and ductwork if that is ok, eliminates a lot chasing sometimes
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Old 01-14-2013, 05:24 PM
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dodge man dodge man is offline
Dodge Ram Forum Senior Member
Join Date: Apr 2010
Location: Macomb, Illinois
Age: 53
Posts: 920
Gender: Male
Vehicle: 2004 Quad Cab diesel
Trim Level: SLT
Color: Silver
Engine: 2005-20?? 359ci (5.9L) Cummins ISB 610 24-Valve Diesel I6 325hp 610 lb/ft
Rep Power: 6
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How sure are you all the blend doors are working. Its a very common issure that the blend doors don't work.
2004 3/4 ton Quad Cab, 24 valve 5.9 Cummins
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