ac blows warm air in front cold in back on 2002 Mercury Villager

when i turn my ac on it blows warm air in the front but when i turn the back unit on it blows cold

by in Saint Charles, MO on July 13, 2010
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1 answer
ANSWER by , July 13, 2010
You need to have the A/C System Diagnosed. Here is an article, that I just wrote to help with just such problems.