||06-26-2013 08:08 PM
Originally Posted by GreenTJ4JC
My 04 doesn't blow cold. Had the AC serviced 2 weeks ago, and it appears the compressor's working (how to check?), the Jeep tech made sure it had the proper amount of freon and lube. Heater door flapper seems like a thing to check; mine doesn't have the slider control, it's the twist knob. How can I check it? If that's working OK, what's the next thing I should check?:confused:
Your control knob activates an electric motor that opens and closes the flapper. The motor is easily accessible under the passenger side of the dash. a nut driver will easily take out the three screws and you can you can drop it down and then manually switch the flapper to the cold side. But this may not be your problem.
I'm still working some gremlins out of my 2002 TJ. Apparently there may be vacuum lines at fault as well. Assuming your 2004 is the same as the 2002 You may need to check your vacuum line for leaks.
Also, just because you had enough refrigerant at the time, if you have a leak it could have all leaked out since you had it checked. You can hear and see when the a/c compressor comes on. You will need to have the hood open and switch on the a/c. You should hear a noticeable click when it comes on and you can see the pully end of the compressor start turning.