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


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  #1  
Old 08-04-2012, 11:08 PM
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Default A/C Turning on and off

Driving the Ram today and noticed it was getting hot in the cab, but I did not turn off my ac. It started blowing hot air like it was shut off. I had to roll down the windows, turned the ac on and off, but it did nothing. All of a sudden, it came back on...thought I was going insane. Then it happened again tonight driving home, going on and off. Has anyone had this happen to them? It's under warranty, but I what a headache!
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Last edited by RockyRam; 08-05-2012 at 11:02 AM.
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Old 08-06-2012, 01:02 PM
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How hot has it been? The compressor might be getting too hot and going into overload to prevent itself from breaking.
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Old 08-06-2012, 03:32 PM
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Hey Dillon, long time no chat. It gets hot as if you were pushing the air-conditioning button to turn it off and then turning it back on it doesn't necessarily feel like the heat is on.
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Old 08-06-2012, 10:41 PM
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Hmm.... If you go feel around the compressor and on those lines do you feel anything kind of oily?
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Old 08-12-2012, 11:38 PM
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it could also be a pressure switch going bad that is intermittently tripping out killing power to the compressor. get it to the dealer before warranty runs out! lol
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Old 08-13-2012, 02:47 PM
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My dads 07 3500 did that. It always would blow air SLOW and then REAL HIGH. Idk its an 07 hting i guess
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Old 08-13-2012, 02:47 PM
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Woo! 90 posts! haha
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Old 08-20-2012, 07:07 PM
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Check the condenser fan. Make sure it's working. I chased the same problem and replaced a bunch of parts I didn't need to until I realized what it was. Turn the A/C on and see if that fan spins up. If not, unplug it and check for resistance between the two terminals on the fan itself. If your multimeter reads 0 or OL, replace the fan. $100+ through NAPA...
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