Ford F150 heating and a/c problems

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  #1  
Old 07-31-07, 06:16 PM
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Ford F150 heating and a/c problems

Got a 2003 F150 when you set control for max a/c it blows out thru the defrost vent ... any suggestions?
 
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Old 07-31-07, 06:34 PM
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Sounds like a vacuum leak or a failing vacuum pump.

Loss of vacuum puts the system in default mode, which is defrost.

Look or missing, damaged vacuum hoses behind the control panel, dashboard, and engine area.
 
  #3  
Old 08-14-07, 04:38 PM
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f150 ac problems

Thx Mark will check out under dash area ... already looked in engine area .. then again it might the pump it self
thx again for the help ... will chk back in later
 
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