Mechanics

98 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 LOCAT

1998 Mercury Mystique • 90,000 miles

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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HUTCH
April 9, 2012.



Check the air blend door/actuator

Rasmataz
Apr 9, 2012.


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