2007 Mercury Marquis I think it is a vacuum leaks

2007 MERCURY MARQUIS
80,000 MILES • V8 • 2WD • AUTOMATIC
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TRAYROA
  • MEMBER
  • 1 POST
Every time I push the gas and start up a hill my AC starts blowing through the defrost
Sep 14, 2010 at 11:32 AM
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BILLYMAC
  • ✓Experienced Mechanic
  • 2,204 POSTS
Hi yes it is a vac prob the easy repair is to install a vac check valve into the vac going in with the heater core hoses. 1 dollar part should solve this
Sep 21, 2010 at 12:57 PM
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