Why is the a/c only blowing out the defrosters ???
Its an 08 E 250
the environmental control is not functioning....either a vacuum hose that's fallen off, or a mechanical link is no longer linked~
Yup. Anything from a control door that has broken, vacuum or electrical control its self. Also, there is a vacuum reservoir under the hood that has a check valve that supplies vacuum to the register controls under low vacuum (hard acceleration) conditions. Often, the check valve fails or the vacuum line is broken.
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