Air Conditioning ? - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
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post #1 of 5 Old 07-19-2008, 12:51 PM Thread Starter
drdetroit3
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Air Conditioning ?

My AC is not working right. It starts off ok then gets warm and air flow gets restricted. The stealership said i need to replace the evap. temp sensor on my 2004 Dodge Ram CTD 2500 but its under the dash and they will need 5 hour labor to fix it and parts for around $750.
Does anyone have any info, advice or know where this part is, I am thinking about doing it myself but I don't have a manual or paper work on my truck.
How does the dash come out?

Thanks Mike
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post #2 of 5 Old 07-19-2008, 01:02 PM
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Mike, I believe I would take the truck to an A/C shop. It sounds to me like it's overcharged. I hate to see the system pop a seal just because it has too much coolant in the system.


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post #3 of 5 Old 07-19-2008, 01:03 PM
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OH ... and Welcome to DT! The greatest Dodge Forum on the planet.


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2002 Ram 1500 SLT 4x4 QC ~ 02 Ram 45RFE to Jeep GC TCM 5-45RFE Upgrade - (Nov.01) 4.7L with 91K/3588hrs, 4.56 R&P/DTT, Sonnax Line Booster, SRT-10 Pod w/Dynojet Wideband Commander, 2-speed manual transfer-case, Clifford Security System w/Auto Start/Auto Windows, RB1 CD/DVD/NAV Infinity Sound System w/30GB iPod, Offroad Package, 33" Bridgestone Dueler A/T, Mopar Rear Wheel Liners, K&N w/Airaid Jr Modular Intake Tube, BBK 70mm Throttle Body, AIR_RAM Jet Stream Scoop, PML Diff Cover, ASP Underdrive Crank Pulley, MSD 1.65 Alt Pulley, V8 Lincoln E-Fan, 2-Speed DCC E-Fan Controller, 180 Jet T-Stat, Flowmaster SI/DO Exhaust, Tire-2-Tire Chrome Tuber Step, Line of Fire LED Light Bar, Sylvania Ultra Silverstars

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post #4 of 5 Old 07-19-2008, 09:29 PM
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Your evaporator is freezing up cause your evap temp senor is bad. Do a search on here and you will find some posts about replacing blend doors which in the same place as your sensor.

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Installed MDS indicator light on dash ---
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post #5 of 5 Old 07-19-2008, 09:32 PM
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NOTE: The HVAC housing must be removed from the vehicle and disassembled for service of the A/C evaporator, evaporator temperature sensor, mode-air and blend-air doors.

1. Disconnect and isolate the negative battery cable.
2. Recover the refrigerant from the refrigerant system (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PROCEDURE - REFRIGERANT SYSTEM RECOVERY).
3. Drain the engine cooling system (refer to 7 - COOLING - STANDARD PROCEDURE - COOLING SYSTEM DRAIN).
4. Disconnect the A/C liquid line and the A/C accumulator from the A/C evaporator (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/LINE-A/C LIQUID - REMOVAL) and (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/ACCUMULATOR-A/C - REMOVAL).
5. Disconnect the heater hoses from the heater core tubes.
6. Remove the powertrain control module (PCM) to gain access to the two nuts (3) that secure the HVAC housing (1) to the engine compartment side of the dash panel (2) and remove the nuts (refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/POWERTRAIN CONTROL MODULE - REMOVAL).
7. On Mega Cab models, remove the floor console duct (refer to 24 - HEATING & AIR CONDITIONING/DISTRIBUTION/DUCT-FLOOR CONSOLE - REMOVAL).
8. Remove the instrument panel from the passenger compartment (refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL ASSEMBLY - REMOVAL).
9. Remove the bolt (5) that secures the HVAC housing (4) to the floor bracket (6).
10. Remove the two nuts (3 and 7) that secure the HVAC housing to the passenger compartment side of the dash panel (1).
11. Pull the HVAC housing assembly rearward and remove the housing assembly from the passenger compartment.
12. If required, remove the fresh air inlet (2) from the dash panel (1).

2008 Dodge Ram 1500 4x4 SLT, 5.7 Hemi MDS, Regular Cab, Long Box, 3.55 LS rear end ,17" cast wheels, Flame Red

Member of the Red Truck Club #231


Switch installed in chime circuit to turn off chime
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Installed MDS indicator light on dash ---
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Tools Box w/ lights inside tided to cargo light
Custom made deer guard 2" pipe
Sportsmaster Tonneau cover w/top gun fabric
Mopar rear wheel liners
Iron Cross stainless 3" step bars
Tailgate open indicator light
9005 fog light bulbs
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