Hi, I have started to have problem with my 2007 Dodge Ram 2500 HEMI where it seems to not blow any air from the AC system. It doesn't happen all the time and in fact this is the second time it's happened in a week. I drove to the gym and it was working. I come back and drive home two hours later and it's no longer blowing any air. I came out the next morning and it was working fine. That was a week ago and it was working fine until it happened again today. I came home and about 3 hours later left again and it would not work. is there possibly some routine maintenance that I am missing that could cause this problem?

 

sounds like you have a bad blower motor... do you hear anything when you turn the fan to a higher or lower speed?

If there is a buzzing or "labored" motor sound then your blower motor is likely shot.

There are a bunch of threads on here regarding the same problem.

 

Don't know about your AC system but mine did that too expect you hear AC working but no air coming out, when I took out the blower motor a piece of vent fell down, I duck tape that piece put the motor back and AC works, air flowing out cold or hot. I assume since our trucks dashboard cracks so check your vents by removing blower motor. My truck is 2002