45Ricochet
North Idaho
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Joined: 09/04/2009
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I'm certainly impressed with all the A/C experts here. Thanks for the information.
06 Ram 3500 CC LB Laramie 4x4 Dually 5.9 Cummins Smarty Jr 48RE Jacobs brake
GVWR 12,200 RAWR 9350
06 Grand Junction 34' High profile 15500 GVWR 3200 pin Mor/ryde 5500 Onan genny Dual A/C Wet bolts
27' Hallett 502, 500HP
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rjsurfer
North Carolina
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Joined: 10/19/2007
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Thanks for all the tips on my freeze up problem on my 03.
It looks like I have a number of things I can check when it happens again.
Ron W.
03 Dodge 2500 SRW,SB,EC
2008 Keystone Cougar 245RKS 5th Wheel
DRZ-400SM
DL-650
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Slowmover
Corpus Christi, Texas
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Joined: 11/14/2003
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C Schomer wrote:The engine fan engages too late when the AC is on, so head pressure goes way up and pushes some refrigerant out the PR valve on the compressor. I (and many others) have added electric fans to help the condenser air flow. I also insulated the bare section of suction line under the hood, between the orifice tube and the firewall. I get cold air FAST and it does fine around town at 110+ degrees. I know I have some broken dampers but I still have good AC so I don't really need defrost or floor air in these parts and it's been that way for 2 yrs. Craig
You can search the DODGE forums a long time . . and this is what you'll come up with.
HEATER TREATER replacement doors are another upgrade/fix.
If you have a slow leaker on the Dodge 2003-2006 2500/3500 you can pull the resistor for fan out of the bottom of the case and get a decent look at evaporator surface. Usually the leaking spot will have telltale oily dirt buildup.
Dodges can have reduced high side pressure and better cooling at low speeds with a foam filler seal above condenser to make air be drawn through condenser and not bypass go through intercooler in that gap. I sealed the sides too but the one that did the most was that top being sealed. I would imagine it had some effect upwards on outlet temp of intercooler. The owner would never know the higher intake air temp to engine but they sure applauded the cooler a/c.
The evaporator temp probe is stuck into top of evaporator case behind glove box. If you open glove box and push back top corners towards each other the box will deform and the rubber stops will clear the dash fram and box will drop down and can be removed entirely if you want.
Look at about level of top of opening on the black case and you will see two green wires (Green on all as I recall) that are very small gauge going to a white connector. The white connctor is the temp probe. It pops out of the case. The bottom end is turned to be closer to evaporator surface. I've seen freeze up when the probe is not snapped in, when the probe is dirty or fuzzy on end, and when the probe is defective.
If it is snapped in and clean then replace it. The other issue that can effect this is a dirty evaporator. Dog, cat, and human hair and other light debis can be sucked in by blower motor and deposit on the inlet side of evaporator and the airflow robs the probe of air it needs to know the correct temp. Cleaning evaporator requires removing it usually. Sometime air blower with tube extension through resistor opening can clean it somewhat. On vehicles using these probe types the sesnor on the end of the probe can absorb moisture and it offsets its value enough that true temp of 36 my be registerd by climate module as 46-48. 34-36 is the level to shut off compressor and 48 is the on temperature.
If it doesn't shut off at the correct temp it will freeze over. This is more likely to occur at night or cloudy days and with lower blower speeds.
Great info . . deserves a dinner at the Ranchman's Cafe there in Ponder!!
.
1990 35' SILVER STREAK Sterling, 9k GVWR
2004 DODGE 305/555 ISB, QC SRW LB NV-5600, 9k GVWR
Hensley Arrow; 15-cpm solo, 25-cpm towing
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Pipewelder
Texas
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Joined: 12/12/2009
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elitelq wrote:"I would think if the doors are failing at the rate that some are saying the Government would have gotten involved by now and a recall would have been ordered."
The doors breaking is not a safety issue unless it makes windows fog up and it doesn't. Ram (used to be dodge trucks) could extend warranty or have a service camapign or some other type of factory paid program for the repairs but they have not chosen to do this nor has any one I know been able to persuade them to help when the failure was at low miles and within a short time after regular warranty expiration.
"Obamacare" for people of little means has been enough of a fight so I doubt Obamacare for Dodge/Ram HVAC doors will ever happen.
Okay now a real question!!! Is the Ponder Steak House still around... And as good as it was 10 years ago? 
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garysol
Avon Ohio
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Joined: 08/07/2010
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My 08 needed a condensor at 45,000 miles.
2008 Dodge Ram 3500 6.7 CTD SRW, Pullrite Superglide 18k.
2012 Komfort 3530fbh 5th wheel with Ground Control
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elitelq
Ponder Texas
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Joined: 02/21/2005
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Ponder Steak House is still good but I do think it has lost ground.
There is never a crowd there like there used to be.
44 foot Elite LQ 4 horse trailer, 2006 F450 tow vehicle.
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elitelq
Ponder Texas
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Joined: 02/21/2005
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garysol wrote:My 08 needed a condensor at 45,000 miles.
What was wrong with the condenser?
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garysol
Avon Ohio
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elitelq wrote:garysol wrote:My 08 needed a condensor at 45,000 miles.
What was wrong with the condenser?
I have no idea. It was a warranty repair and I did not ask for an explanation all I know is that my A/C is ice cold again.
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