AC blowing hot air

[jwheeles]

My AC started blowing hot air today. Hot as in the heater is on. The compressor is running and appears to be working properly. The temperature control has no effect on the temperature blowing out. It's wide open hot all the time.

I'm wondering about the controls that change the temperature of the air that is blowing.

Anybody got any experience with this? Thanks ahead of time.

James

 

[AJK381]

probably a blend door, or one of the lines to it. kinda a common jeep prob, ive seen it a lot in the grand cherokees

 

[jwheeles]

probably a blend door, or one of the lines to it. kinda a common jeep prob, ive seen it a lot in the grand cherokees

Are the controls vacuum operated or are they just a cable? Trying to figure out where and what to look for.

 

[ThunderbirdJunkie]

Vacuum operated.

 

[tjkj2002]

The main blend door is controlled via electric motor(hot/cold),the mode doors(where the air comes out) are vacuum operated.

 

[valvestem]

I have a URL for a HVAC Service Manual if you want it.

PM me, I'll get your email and send it offline to you to avoid conflict.

 

[jwheeles]

Thanks guys. I just went ahead and took to the shop. I'm working twelve hour days and seven days a week right now. I hate doing that but it appeared to be the best thing to do under the circumstances.

Once again. Thanks!

 

[ThunderbirdJunkie]

ThunderbirdJunkie expects it's simply HoosierJeeper that's infested your vents.

 

[jwheeles]

ThunderbirdJunkie expects it's simply HoosierJeeper that's infested your vents.

Hey, it could be. I haven't changed my info but I'm now in Hoosier land....

 

[jnaut]

Thanks guys. I just went ahead and took to the shop. I'm working twelve hour days and seven days a week right now. I hate doing that but it appeared to be the best thing to do under the circumstances.

Once again. Thanks!

That's why we pay people to fix our vehicles for us, sometimes. Not all of us can be everywhere at once. Modern civilization = specialization.

 

[Dave Haggard]

mine was the low pressure switch that went bad.....