1993 Mitsubishi Diamante "air vent vacuum system" Questions

vent door movement. Worst case is a bad vacuum motor or air flow position selector switch, and/or a faulty Blend Door Actuator. If you have been driving around with the Temperature knob or control set

vent a/c distribution system works fine but on acceleration I hear a door close and cold air comes through vents but on hard stop door must close and stops cold air from system. Air comes out of vents

...air handling system is usually directed by vacuum actuated servo's. That is, vacuum, produced, when your engine is running (when each piston goes down it creates vacuum) This vacuum can be Co-gen ...

...VENT/DASH VENTS. AIR ONLY COMES FROM THE DEFROST VENT. A/C SYSTEM AND VENT AND HEAT ALL WORK WELL JUST BLOW FROM THE DEFROST VENT. CAN'T CHANGE TO THE DASH VENT OR FLOOR VENTS. Sounds like you have a ...

...vacuum motors which open and close doors in the air ducts. The doors control the flow of the air to the correct vents. For instance, warm air is sent to the vents below the windshield to provide a ...

...vent control. For the air system the defrost function is the default setting. When there is a bad switch or a vacuum leak the system will go to the default setting. Unfortunately on that car the ...

...often through the defrost vents. u need to check the vacuum from the engine to the ac control head, the air defaults to the defrost when the system looses vacuum from the engine, this is for

...setting is a/c/winshield vent. You can a/c or heat the defrost air. A lot of cars don't allow you a vent setting for defrost anymore. I have one that does & one that doesn't. The latter is

air are vacuum operated, if you loose vacuum the system goes to defrost for safety reasons, the vacuum comes from the engine, then goes o a plastic vacuum tank under the hook start there, it is a 3/16

...air flow. when there is a vacuum leak, the control door defaults to the defrost vent. the motor, vacuum lines and directional control knob must be inspected. most of the time i have found that there ...