Hey
the front blows cold the rear blows regular air. I check the rear blower motor and door. It works fine. U watched it open and close when I switch from ac to heat. I noticed the rear lines never get cold. Is it clogged? What can I do?
thanks

 

Doe the rear blow cold air at any time?

 

No just the outside temp air. I checked the blend door an it works fine

 

I needed to know if any refrigerant was getting to the rear evaporator, even for a short time.

 

I don't think so. I have never worked on an AC system before. But the rear line never get cold. Clogged?

 

There is a TXV, thermal expansion valve in the rear that is probably clogged or just not functioning.
Not being familiar with A.C work, I would suggest you have a shop equipped to do this work do the job. It can get a little involved and can leave you pulling out your hair.
If it was as simple as taking out one part and installing another , that is only part of the problem. Some special equip and it's use are required..

 

Similar situation here. Front blows cold and rear blows cold and gradually turns to warm or hot.