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Dodge Ram Climate Control

315 messages,  Last post on Dec 02, 2009 at 8:03 AM

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What is this discussion about? Dodge Ram Pickup 1500, Dodge Ram Pickup 3500, Dodge Ram Pickup 1500 SRT-10, Dodge Ram Pickup 2500, Heating / Cooling, Truck

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#248 of 315 Re: 2500 dodge ram deisel [mikey66] by alansteven Jun 26, 2009 (2:43 am)
Replying to: mikey66 (Jun 14, 2009 9:09 am) hi..i seem to have a similar problem to you..the a/c works for about a minute then stops.. had the re-gas..that didnt work.. changed the particle filter..and that didnt either...i noticed that the outlet pipe on the filter..(located on the passenger side (lhd) in the engine comp) was warm ..as i think it should be ..and the inlet side freezes..which i think blocks the pipe up...this makes me conclude that it could be a heat sensor switch..but i dont know were it is or if it even has one..mine blows hot on one side also..but before it freezes both sides work...if my guess is anywhere near correct it should be a cheap an easy repair...so if any info /diagrms of the a/c come your way i would like to see them..cheers al Replies to this message: heatertreater (Jun 26, 2009 8:46 am)
#249 of 315 Re: 2500 dodge ram deisel [alansteven] by heatertreater Jun 26, 2009 (8:46 am)
Replying to: alansteven (Jun 26, 2009 2:43 am) There are two ways that you can see a differential between the passenger and driver's sides. The system is designed with separate air flow chambers for the passenger and driver's sides. The same box is used for dual or single control with the difference being separate doors and motors vs a single axle with two doors, like two flags on a flagpole. There are two possible explanations for your symptoms.   1. All air flows through the evaporator core into the two channels. On other dual control systems, the evaporator coils run vertically and if there is a gradient across the core, it is equally divided between the passenger and driver's side channels. On the RAM, the core runs horizontally from the driver's side chamber to the passenger side chamber. If there is a differential across the core, the drivers side will be cold and the passenger side which is further downstream will be warmer. If the refrigerant charge is low, the impact of having the evaporator core designed 90 degrees out of phase is that the drivers side will be cooler. This problem is solved by having the coolant charge perfectly adjusted...not too low, not too high. This is actually a design flaw in the system and there is no good solution other than keeping the charge perfect.   2. The system has two sets of blend doors that operate in unison and "clamshell" around the heater core. Each set has two doors(two flags on the flagpole). The connection between the two "flags" is a weak point and the back door can snap off, leaving one side of the heater core exposed on one side. The driver's side which is the front one can be completely normal, but the back door can be broken. This will also cause a temperature differential like you are seeing. The only way to determine if this is the problem is "exploratory surgery" to get into the box and check for a broken door.   My best advice would be to check the refrigerant charge and make sure that it is correct. If this doesn't solve the problem, I'd suggest getting the HeaterTreater blend door kit and following the instructions to get into the box and look for problems. You would also be able to physically check the temperature across the core when the box is open. You will be able to at least get enough information to figure out the problem.
#250 of 315 2004 Dodge ram diesel A/C by mikey66 Jun 28, 2009 (10:43 am)
can anybody tell me which valve on the a/c system is the low pressure side so I can charge my system. Is there a diagram available. ??? Replies to this message: alansteven (Jun 28, 2009 9:58 pm)
#251 of 315 Re: 2004 Dodge ram diesel A/C [mikey66] by alansteven Jun 28, 2009 (9:58 pm)
Replying to: mikey66 (Jun 28, 2009 10:43 am) hi..on my dodge Ram 1500 the low pressure valve is on the passenger side (assuming LHD) of the radiator.
#252 of 315 vacume hose for recirt by kstell Jul 09, 2009 (10:07 am)
I have a 2006 Dodge Ram, and the warranty just expired, and I to am experiencing the problem with air flow. However it did not start until recently after my wife brought the truck and had the oil changed. Is there a vacume hose which runs from the engine to the firewall, which could have possibly been knocked off by those guys changing the oil. If so where exactly would I look. If anyone can help please let me know. Replies to this message: alansteven (Jul 09, 2009 10:18 am) kstell (Jul 09, 2009 10:22 am) alansteven (Jul 09, 2009 10:52 am) condor74 (Jul 09, 2009 3:01 pm) sciec (Jul 18, 2009 8:33 am)
#253 of 315 Re: vacume hose for recirt [kstell] by alansteven Jul 09, 2009 (10:18 am)
Replying to: kstell (Jul 09, 2009 10:07 am) hi..when you say air flow ....is that hot/cold air from a/c and heater in the cab ? Replies to this message: kstell (Jul 09, 2009 10:22 am) alansteven (Jul 09, 2009 10:52 am) condor74 (Jul 09, 2009 3:01 pm)
#254 of 315 Re: vacume hose for recirt [alansteven] by kstell Jul 09, 2009 (10:22 am)
Replying to: alansteven (Jul 09, 2009 10:18 am) yes. For the A/C, to assist in the recirt door opening and closing. Replies to this message: alansteven (Jul 09, 2009 10:52 am) condor74 (Jul 09, 2009 3:01 pm)
#255 of 315 dodge ram 1500 2002 by alansteven Jul 09, 2009 (10:33 am)
hi..does anyone know where i can get a replacement right hand door mirror glass for my ram sport 1500 ?..2002 sport ..seems to be a lot of wing mirrors but not any replacement glass.. I`m in the U.K. and not that many over here...
#256 of 315 Re: vacume hose for recirt [kstell] by alansteven Jul 09, 2009 (10:52 am)
Replying to: kstell (Jul 09, 2009 10:22 am) could be the connectors on the high pressure switch above the a/c compressor .. a mechanics helper pulled mine off checking the oil..or the a/c might need gassing...could be a fuse...wouldn`t think it is a hose ..also you could check the inlet/outlet pipes on particle filter..(passenger side rear of engine bay black cylinder)should be warm and cold but not frozen..if it is frozen whilst a/c running probably be high pressure switch disconnected...hope it helps
#257 of 315 Re: vacume hose for recirt [kstell] by condor74 Jul 09, 2009 (3:01 pm)
Replying to: kstell (Jul 09, 2009 10:22 am) there is no vacume hoses to the a/c unit on a 2006 dodge truck. If you suddenly experianced a lack of air flow from the vents, you most likely broke your recirc door.   remove your glove box door and you will see an grid opening in the upper right hand corner. reach your fingers in there and see if you can feel the recirc door laying there . If so then it broke. You can remove your blower motor. It has 3 screws holding it. You can use a flat blade screw driver, or a T20 torx. reach your hand up inside and twist and pull the broken door out. Your air flow will be improved. That will get you by until you can get the housing replaced.

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