Question about 2001 Ford Expedition

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Front a/c is blowing cold and the rear is blowing hot. I put a gage on the high side and it reads 250. I know it suppose to read around 350. How is it possible that there is a difference in the front and back? What is the solution?

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  • yadayada
    yadayada May 11, 2010

    IT IS NOT SUPPOSED TO READ 350 PSI, ABOUT 250 MAX ON A HOT DAY AND VARING UP AND DOWN FROM AROUND 200 PSI. THE BACK OF COURSE USES THE SAME AC COMPRESSOR BUT IT HAS ITS OWN BLEND DOOR ACTUATOR TO CONTROL TEMP, IS THAT WORKING? CHECK IT.

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I have an excursion that did this and it was a small aluminum valve (can't think of the name right now). it was located in the back, remove an access panel by the fan motor in the back and there may be an aluminum block that the a/c lines screw into.....this will need replaced and then your a/c will need recharged accordingly...it is a simple fix......$40 part? I can't remember how much, but not too much. This valve gets stuck and don't allow a/c flow.

Posted on Jul 16, 2009

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