1968 A/C blowing through defroster vents | Ford Thunderbird forum club group 1955-2005 models

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1968 A/C blowing through defroster vents

  • Thread starter Thread starter cdavid
  • Start date Start date
I believe that if you have any vacuum leaks, one of those leaks operate all the dampers on the a/c/heat system. The system will always default to the defrost mode. At least my 68 (which has the automatic climate control) my mechanic went thru 2 NOS "ac/heat computer like mixer units" before finding out it was just a vacuum leak that controls the dampers. Good luck!
 
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