1997 Chevy Monte Carlo Air blows out defrost vent only

1997 CHEVROLET MONTE CARLO
289,000 MILES • 6 CYL • FWD • AUTOMATIC
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NANKIPOO
  • MEMBER
  • 1 POST
1997 LS

I just bought this car and I am fixing various things that need tlc. I charged the A/C and it seems to cool, but it only blows out the defrost vent. Also at the same time it seems to blow warm air out the floor vents. It runs great ,so that means not likley a vac leak, right?

Any ideas , Thanks

Lowell
Aug 13, 2009 at 2:45 PM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Hello, yes, you need to check the vacuum source. On systems that use vacuum for actuators, I've seen them default to the defrost mode.
Aug 14, 2009 at 2:10 AM
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