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Dodge Ram Climate Control

311 messages, Last post on Nov 26, 2009 at 7:27 PM
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| Hi.. Was hoping someone could help.. I have a 1998 Dodge Ram 1500 4x4 Regular cab 5.2 liter engine.. My air conditioning is shutting down.. It runs fine at idle speed, and blows cold air. When I run at street speed, the compressor shuts down, and the fan blows hot air. Last summer I had the evaporator core, a/c acummulator, high and low side switches replaced. At that time, the air would run for 10 minutes or so, then shut down. After a few minutes, it would come back on. Now when it shuts down, the compressor does not come back on, even at idle. I had a friend put gauges on it and the charge seems to be fine. The only thing I can think of is that it is the compressor itself, unless there is some electrical problem or switch that I do not know of.. Any help would be appreciated.. Or a link to an electrical schematic.. Thanks for any help... Keith | |
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Replying to: heatertreater (Jun 15, 2009 8:51 am) |
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Replying to: mikey66 (Jun 14, 2009 9:09 am)
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Replying to: cmoney4 (Jun 18, 2009 11:30 pm) |
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Hello...just recently started to experience minimal air flow through my dash vents, defroster, etc.., regardless of fan speed setting. I dropped the blower motor out of the case and found the recirc door had snapped off and fallen down over the blower, restricting flow. After reading some earlier posts, it sounds like this is a commom problem...I'm wondering if anyone knows about any TSB's issued for this problem? The truck is still within warranty, but it sounds like it will be easier to just buy a new door and install it...in regards to the servo motor controlling the door, does it need to be reset somehow once the new door is installed? Thanks for your help!
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Replying to: fourwinds (Jun 20, 2009 4:06 pm) HeaterTreater has a DIY kit to replace the door by just removing the glove box panel, and provides a metal replacement door that will withstand the forces in the system for the life of the RAM. Check their web site(heatertreater.net) for diagnostic information and a video showing the replacement process. This is a common problem with the RAM and is not confined to just the re-circ door. The RAM has four door systems for blend and airflow control and all of them are susceptible to the same fail mode as the re-circ door. While you have the dash open to replace the re-circ door, you should also check the other doors to see if there are additional problems. The two most common fails are the re-circ door and the mode 1 door(controls air distribution for vent VS floor/defrost. Full information is available at the above site. The actuator motor is calibrated by the computer and does not require any special alignment when installing the motor. There is a limit pin on the door axle that constrains the movement of the door between two stop points molded into the housing. The blend doors/Mode 1 door/Mode2 door all have two stop points for open/closed. However, for some unknown reason, the re-circ door only has one stop point and all force is transferred directly to the door in re-circ mode. This makes the plastic door more susceptible to failure and the design flaw is what's responsible for the failure you are seeing. While the re-circ door is a little worse with only one stop, the other doors aren't much better and over time this will be an ongoing failure issue. The doors aren't particularly hard to fix with the HeaterTreater kit, but you need to know what to look for and keep an eye on the system.
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Replying to: heatertreater (Jun 20, 2009 5:28 pm)
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Replying to: fourwinds (Jun 21, 2009 5:21 am) This is going to sound like shameless self promotion, but since you already have a little frustration with the dealer, why not mess with their minds a little. Suggest that you want warranty work done on your truck, but want HeaterTreater metal doors installed to replace all the cheap plastic and demand that they pay for the parts to make up for obvious design flaws in the system. You would end up with a long term reliable system and no cuts in the box. There's no way in he11 they'll go for it, but at least you can get a little satisfaction from being smarter about the Dodge Ram than they are..... In reality this would be a smart customer focused move on their part, but I wouldn't count on it.
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| The A/C will work but doesn't blow hard enough, I've even tried closing the vents on passenger side while riding alone to send the pressure to the driver side vents but for us ram owners its obvious the air still seeps through the vents while closed. It is now hell scorching summer heat with the range of mid 90's to 100 here in atlanta GA, and after an early mourning 8hr shift its around evening hell heat time, and snow balls, + A/C+ interior = is needed. I could be wrong but I believe it blows better after driving a minute, but it seems like with this being a truck and on direct face dial, and full blast, it should be hitting me in the face little harder. Now it may take a minute but it does cool down temp wise, especially at night which is self explanitory, but after being in other smaller size vehicles with A/C blowing 10 times harder than mine, just wanted to check around and get some opinons or similar issues...then again it may be fine..but not sure... | |
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Replying to: heatertreater (Jun 21, 2009 11:00 am) |
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