a.c doesn't work when truck is idle on 2002 Dodge Ram 1500

My air conditioning works fine when I am driving. When I stop at a light or I am parked the air being blown in the cabin becomes warm. I've tried reving the engine to see if that would help but it does not. even if I am just rolling down a hill the air gets colder. If someone knows what this is I would also be interested in how much it might cost. Thank You in advance.

by in Manchester, CT on August 16, 2009
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
4 answers 4 comments
ANSWER by , October 24, 2009
you have a blown fuse had the same broblem, just replace fuse.
COMMENT by , October 25, 2009
bdigger69 you are correct. It was the fuse. SO SIMPLE now. Thanks for your response
COMMENT by , June 19, 2010
I too just replaced this fuse! Thank you so much! God bless!
COMMENT by , August 08, 2011
Which fuse? How do I find it?
COMMENT by , May 18, 2015
I'm having trouble finding the fuse information also. Can someone help?
ANSWER by , August 17, 2009
This sounds like a fan issue. When your truck is moving, air is moving through the radiator/condenser, but not when the truck is stopped. At a stop, the radiator fan performs this job, so that is where I would start.
ANSWER by , August 27, 2009
I had the same issue. It is the fan.
ANSWER by , September 02, 2009
If you push a paper clip in the back of the fan and push the rear plate in alittle bit and keep it there it will work. It is still working in my truck.