Question about 1994 Buick Park Avenue

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The air for the air condition comes out the floor and defrost wont come out the wright vents

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  • 13 Answers

It sounds like you have a break or pin holes in your vacuum lines, and it not allowing you to switch vents.

Posted on May 10, 2009

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Posted on Jan 02, 2017

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Related Questions:

1 Answer

Heater control wont switch to the defrost


In your HVAC unit there are at least two 'doors' that are moved by servos. (1) regulates your temperature - the blend door, which adjusts/blends the amount of air coming through your heater core and your air conditioning evaporator. (2) regulates where the air goes - the mode door (there may be multiples of this depending on your model, etc), that selects floor, dash vents, and defroster vents. One of your servos may be bad, or your mode door may be jammed.

Jan 20, 2016 | 2001 Dodge Intrepid

1 Answer

There isn't any air flow coming out of the front vents when the air conditioning or heater is on. Only air coming from the defroster and floor vents.


There is a mode selector in the plenum that controls where the air comes out. That flap inside is either broken, loose or has a bad control.

Aug 20, 2015 | Cars & Trucks

1 Answer

My air condition and heat works on defrost only sometime comes out vents last seconds didn't matter were controller set


Not sure what year, make or model vehicle is in question, but the issue is due to an actuator that has gone bad. Sometimes referred to as a mode actuator or blend door actuator. This actuator controls where air/heat will blow from (defroster vent, forward vents, floor vents or combo, etc.). Good luck. Ron @ Speed-O-Repair.

Aug 24, 2014 | Cars & Trucks

1 Answer

The ac on my 1998 ford ranger only blows out the defrost vent and floor vent. How do I fix it?


Almost sounds like the actuators are inop. depending on which style you have, some are electrical motors and some are vacuum. These control the mode doors which move to deflect air to various vents.

Jul 03, 2012 | Ford Cars & Trucks

1 Answer

1990 corvette can't change air vent from defrost mode


The mode door defaults to defrost when it loses vacuum. I would start by checking for cracked/ loose vacuum hoses in the engine compartment.

Mar 18, 2012 | Chevrolet Cars & Trucks

1 Answer

I have an 01 Jeep Grand Cherokee. When you turn on the air conditioning air does not blow out any of the vents except a small amount of air (cold) will blow out the defroster vents by the windshield. If...


behind the center counsel between the floor and the heater housing is a part that is called the blend door actuator. these usually go bad and have to be replaced.

Mar 15, 2010 | 2001 Jeep Grand Cherokee

2 Answers

THE AIR CONDITION AND FAN WONNT BLOW OUT FRONT


follow the vents from inside to the fan to make sure there not clogged

Nov 01, 2009 | 1993 Jeep Wrangler

1 Answer

Problem with air not coming out of vents.


Check for a vacum leak from the engine to the a/c.The color of the hose is black. Also check if the heater control valve hose is unplugged. If you have vacuum the it sounds like the door for the vent/floor/defrost is broken.

Jun 08, 2009 | 2004 Ford Ranger

1 Answer

Air condition


Have you checked the diverter doors under the dash??
It sounds like a vaccum hose may have fallen off your vent controller.
I have had similar problems and found that the air WAS moving, but it was all going up through the defrost vents at the windshield.
A quick check of the vac. lines showed that one under the glove box was pulled off.
with the engine running, try setting the air settings to all the options ( vent/floor/defrost..etc..)
See it you can feel or hear the diverters moving under the dash..

Jul 02, 2008 | 1994 Chevrolet Lumina APV

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