1998 Mercury Sable Vents

TURBOHAUL

MEMBER
1998 MERCURY SABLE
6 CYL
FWD
AUTOMATIC
125,000 MILES

One morning after I start the car, I put on the ac, and I realized that no air was blowing out of the front vents, but ac from the floor and defrost vents. The ac control played no role when I switch from defrost to floor only or to front vents only. I checked the actuator and it seemed to be fine. What could be a possible solution and how to repair it?

Tuesday, June 8th, 2010 AT 9:49 PM

3 Replies

BMRFIXIT

MECHANIC
19,053 POSTS

Manual A/C-heater controls are included in the integrated control panel, located near center of the instrument panel. A/C-heater controls include a function selector knob, temperature control knob and blower speed control knob. Function selector knob actuates a vacuum selector valve that controls vacuum to door actuators. Door actuators control position of outside/recirculation, floor/panel and panel/defrost doors. Door positions determine airflow modes (panel, floor, defrost, etc.).

Check for vacuum leaks
as it will default to defrost and floor in case of lose of vacuum

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Wednesday, June 9th, 2010 AT 4:42 PM

TURBOHAUL

MEMBER
2 POSTS

One small problem. I can't seem to find where the vacuum hose is connected from the engine. Any diagram that could assist me in locating the vacuum hose fitting?

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Saturday, June 12th, 2010 AT 1:48 PM

BMRFIXIT