A.C. blowing hot air when idling

Asked by Stephen Mar 29, 2018 at 03:47 PM about the 2007 Dodge RAM 1500 SLT Quad Cab RWD

Question type: Maintenance & Repair

My truck's A.C. is not as cold as it should be when
driving, and blows warm air when idling. Where do I
start for diagnosing?

4 Answers

3,300

sounds like you're low on freon

1 people found this helpful.
3,300

if this is true, you need to get a can of florescent freon so you can see where your leaking

2 people found this helpful.
5,635

Get a a/c gauge set and read what you have for high and low pressure sides. Mastercool.com has a chart posted for proper readings for ambient temps. Would also have a look at the condition of the a/c clutch assembly and make sure that it is operating and the bearing is not wobbly. If all that checks out you may have a sensor issue. Good Luck!

1 people found this helpful.
30

Mine had same problem. Turned out to be 25A ac fan blown. Replaced and works great now. Check fuse panel first.

3 people found this helpful.

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