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Heating & Cooling 3rd Gen Dodge Ram Heating & Cooling Problems and Questions.


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  #1  
Old 05-15-2010, 01:26 AM
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Default $20 for 37 air conditioning.

on our trucks, they put the a/c condenser next to the heater core under the dash. in the summer months the hot coolant running through the core affects a/c performance - especially in the desert

on the passenger side find the two heater hoses. in a spot where they won't interfere - cut them in half and install a 1/2" ball valve fitted with 5/8" barb adapters on each hose - tighten the hoses with regular hose clamps. keep the valves open and refill any lost coolant. start the truck and run the heater to get rid of any air in the system.

shut both valves off and take the truck for a spin, you will notice how much faster the a/c cools off and how much colder it gets.

i would have to run mine on full blast and if i was lucky i would get in the 40's. with this mod during 120 days it gets down to 37 and i mostly use the 3rd speed.
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Old 05-15-2010, 01:30 AM
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Not really needed where I am, but KUDOS for such creativity and figuring this out!
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Old 05-15-2010, 02:11 PM
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Just curious, do you get any better mileage without the added drag from the AC compressor? Since the interior temp gets cooler more efficiently, the compressor wouldn't have to cycle on as much. Less drag=better fuel efficiency? Even a bump of 1/2mpg would save me about $3 every time I fill up. I live in FL, and we use our AC alot!
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Old 05-15-2010, 02:45 PM
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nothing noticeable in mpg's - cab gets frigid so i'm happy
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Old 05-15-2010, 10:28 PM
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Not such a worry for me in Canada... got a way to get more heat for the winter?
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Old 05-15-2010, 10:57 PM
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Could definitely use that around here right about now, we went from freezing to sweltering (that includes humidity) almost overnight! Props to ya' for the ingenuity!

- Cajun
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Old 05-16-2010, 12:19 AM
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Thats a pretty cool idea! I do notice that the AC takes a little to get really cold. I dont think I will do this but it is a real cool idea!
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Old 05-16-2010, 10:59 AM
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Quote:
Originally Posted by CdnoilRAM View Post
Not such a worry for me in Canada... got a way to get more heat for the winter?
yes...get a coolant cooled turbo setup

Gets hot within a few miles of driving...lol

And, thats an interesting mod. Doesn't affect the engine temps, does it? Since coolant isn't flowing how it was designed to.
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Old 05-16-2010, 11:35 AM
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Cool idea . No pun intended .
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Old 05-19-2010, 10:25 AM
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Great idea, I can see where putting in a couple valves would not disrupt the water cycle on the 4.7.

Love to see a pic...
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