How do you fix the rear AC of a 2000 Ford Expedition when the front AC still works?

Answer 1

The answer to that question depends on what the rear ac is doing or not doing. Both the front and rear ac systems operate from the same compressor. If your front ac works fine and the system has a full charge your problem might be in the expansion block located in the rear of the vehicle. You can find the block behind one of the rear panels. Remove the panel and run the ac system. follow the ac lined that come up from under the vehicle and you will see that both lines run into what looks like an aluminum block. Check the temperature of the lines on both sides of the block. The line that runs to the rear evaporator should be extremely cold. If it is not chances are that you have an expansion block concern and it should be replaced. CHECK THE FAN RELAY FOR THE REAR AIR ALSO CHECK THE CONTROL LOCATED IN THE HEADLINER