1998 Mercury Mystique only blows out the defrost vent

Tiny
HUTCH
  • MEMBER
  • 1998 MERCURY MYSTIQUE
  • 90,000 MILES
98 mystique blows cool & hot air out defrost vent only, is there a check valve or something and where is it located, how do I check my vacuum hoses for a leak? I have a repair manual but the check valve, if that's what it is is really unclear on the locate. Just like to know how to check vacuum lines for leaks and what if it's not a bad line, where's the check valve located inside by the heater core or under the hood some where? I have a manual but it's not real clear? Or is it something total different? Thanks again! HUTCH
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Monday, April 9th, 2012 AT 12:00 AM

1 Reply

Tiny
RASMATAZ
  • MEMBER
Check the air blend door/actuator
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Monday, April 9th, 2012 AT 12:13 AM

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