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RockyRam 08-04-2012 11:08 PM

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!

GeauxHunting 08-06-2012 01:02 PM

How hot has it been? The compressor might be getting too hot and going into overload to prevent itself from breaking.

RockyRam 08-06-2012 03:32 PM

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.

GeauxHunting 08-06-2012 10:41 PM

Hmm.... If you go feel around the compressor and on those lines do you feel anything kind of oily?

fireman21 08-12-2012 11:38 PM

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

LoneTex 08-13-2012 02:47 PM

My dads 07 3500 did that. It always would blow air SLOW and then REAL HIGH. Idk its an 07 hting i guess

LoneTex 08-13-2012 02:47 PM

Woo! 90 posts! haha

RedneckMechanic 08-20-2012 07:07 PM

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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