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Heating & Cooling 4th Gen Dodge Ram Heating & Cooling Problems and Questions.

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Old 06-30-2012, 12:02 AM
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Join Date: Jun 2012
Location: mobile Alabama
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Vehicle: 2008 ram 2500 6.7 crew cab 4x4
Trim Level: slt
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Engine: 2007-2011 409ci (6.7L) Cummins Turbo Diesel 350hp 650lb/ft
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Default A/c compressor stopped working

I have a 2008 2500 w/ 6.7 cummins, it has 118000 miles, today when the temp hit 105, my ac went out, without warning. Looking at the compressor while the engine is running, the compressor is not engaging, checked the fuses under the hood, with no problems found. Has anyone had this happen? I have never had one just stop like this before, usually a smaller problems starts and then leads to total failure... Thanks.
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Old 07-03-2012, 10:14 AM
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astroman54 astroman54 is offline
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Vehicle: 2009 Dodge Ram 1500 Crew Cab
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This sounds like the compressor clutch isn't kicking in. It could be a couple of things, the most expensive is the clutch itself (replacable without replacing the whole compressor, but most likely they will opt to do both as it's a quicker turn around). The other items that it could be is a low refridgerant level, or a back refriderant pressure switch. If the system indicates a low refridgerant pressure, it will not let the clutch engage. There may also be other items that keeps the clutch from engaging as well..

2009 Dodge Ram 1500 Sport Deep Water Blue Crew Cab Hemi 4x4
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Old 11-14-2014, 07:04 PM
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Gzila850 Gzila850 is offline
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My '09 6.7 with 80k miles started smoking thru the AC vents when system was turned on. Clutch was rattling upon inspection... local shop replacing "everything" for $1,750 (clutch, compressor, drain and refill, etc). About a 6 hour job based on what I heard from two places.
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