another rear air problem

[01fordeb]

Iv got this 03 ford expedition that wont blow cold air to the back, But it has heat. Cold works in the front. Checked all the water hoses that go to the back and all around and all work, Front cold air works so shouldn't be refrigerant. Any input?

 

[nitrostangracing]

Rear AC can be tricky. Along with the Mechanical there are Electrical possibilities. I would have a set of gauges installed to see what your actual Pressures are. Tat will tell alot.

 

[Explor2Exped]

Don't mean to jump into your thread 01fordeb but I'm also having a rear AC problem.

Doesn't turn on at all.

How do I go about removing things & getting to the problem?

 

[walnuts4x4]

Iv got this 03 ford expedition that wont blow cold air to the back, But it has heat. Cold works in the front. Checked all the water hoses that go to the back and all around and all work, Front cold air works so shouldn't be refrigerant. Any input?

don't know for certain... but it makes sense... I would look into seeing if there is a rear "blend door"... the door that controls hot and cold... I know the front is known for breaking and then the door not functioning.... but never played with the rear.... might wanna see about a actuator or the blend door itself.... of if there is something that controls the heat/AC...

 

[01fordeb]

Yea haven't done much research but been playing with it a little.

 

[GAINMOB]

may seem like a silly question...are the vents in the rear open and is the rear controls on? to include the one up front for the rear?

 

[joezek]

I bought my 03 with rear a/c broken and front worked great. Thanks to help from ELVATO I got it working again.

In my case, and most other people's, the two actuators that control temperature (blend door) and ceiling/floor vents both break. There are tiny little plastic gears inside the actuators and they break the teeth off. Then the blend door gets stuck on full heat, and the air gets stuck on either ceiling or floor.

Those actuators are expensive as hell, but I got the gears dirt cheap (free) and completely fixed the problem in about 2 hours. You could also just take the rear a/c compartment apart and manually set it to full cold and then not worry about it. That's what I did before fixing it.

 

[bhamilton]

Did this get resolved? I'm dealing with the same issue. Front works great, but rear blows warm. Don't think it is the blend door because when I turn the rear heat on, it blows HOT. Any other ideas?

 

[walnuts4x4]

with the blend door... when it breaks it can still swing open and closed... but to get A/C it needs to be fully closed so if the door is broken then you will always have heat... I would try and check to see if the doors are broken... probably the best starting point