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A/C blow out the floor and Defrost not the vent

My 1985 oldsmobile cutlass a/c only blows out of defrost and the floor whats causing this problem

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There will be a vacuum under hood going to a canister(looks like a ball) that could be off or the vacuum hose is bad or bball(canister) is leaking

Posted on Jul 04, 2009

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1 Answer

Vents won't switch in my 98 Oldsmobile regency


Not under the hood. The "mode" door, actuator and vacuum lines are on the heater box under your dash.

Jul 27, 2017 | Oldsmobile Cars & Trucks

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My heater does not blow in floor in a dodgeram 1500


the heater vacuum motor and lines needs to be checked.Also get the blend door checked.

NO HEAT ON FLOOR VENTS

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As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html


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No heat on Oldsmobile Silhouette?


http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

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Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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Hot air on the driver's side vents only?

http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

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Temperature gauge does not move and no heat when heater is ON?

http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html

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1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold?

http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

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No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html

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Ford F150 Ac only blows through defrost vents?

http://technoanswers.blogspot.com/2012/01/forf-f150-ac-only-blows-through-defrost.html

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Dodge A/C come out of defrost vents only?

http://technoanswers.blogspot.com/2012/01/dodge-ac-come-out-of-defrost-vents-only.html

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Ac vacuum line on dodge cummins?

http://technoanswers.blogspot.com/2012/01/ac-vacuum-line-on-dodge-cummins.html

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Ford ranger AC blows cold through defrost vents instead on cabin vents?

http://technoanswers.blogspot.com/2012/01/ford-ranger-ac-blows-cold-through.html

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2005 Chrysler PT Cruiser: A/C Blows Warm?

http://whoisbyme.blogspot.in/2012/06/2005-chrysler-p8t-cruiser-ac-blows-warm.html

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2009 Mercury Grand Marquis: A/C blows Cold From Defrost Vent Only?

http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html

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AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

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These will help.

Thanks.

Nov 28, 2012 | Cars & Trucks

1 Answer

I have a 1993 Olds Cutlass Supreme. The Defrost works and it blows air out of the floor vents. It does not blow warm or cold air out of the dash vents???????


the heater control panel possibly bad. the panel where your heater is at. on the dash,actually where you're turning the directiona for floor and dash, or it could have a bad connection on switch behind the panel.have you spilled liquid on dash in the past? if so you may be able to pull the panel and clean it in order for it to work again. hope this helps!!!

Aug 18, 2010 | 1997 Oldsmobile Cutlass Supreme

1 Answer

I have a 2001 Oldsmobile Silhouette and the front Air Vents do not blow out anything at all. There is no A/C heat or defrost. Would a low compressor cause this? The rear vents are blowing out air as...


The blower motor is either bad, or if you hear it blowing in the front but nothing comes out of the vents, then it's a vacuum motor problem. The flaps aren't angled right to allow air to come out of the vents (either for a/c, heat, or defrost).

Jul 07, 2010 | 2001 Oldsmobile Silhouette

1 Answer

Defrost blows constantly? How do i fix it?


does it blow through the defrost vent only when you switch to vent/floor or does it blow through defrost and vent/floor? is it a switch that is just electric or a manual lever that you slide? the manual type will have that problem if the diverter or the linkage behind the lever(in the dash behind the panel......may be able to access underneath) becomes broken or disconnected so that the air is diverted to defrost regardless where you move it.if you can get to it, you will see what is broken or maybe a fastenerr fell off.

Feb 13, 2010 | 1994 Chevrolet C1500

1 Answer

98 Olds LLC - AC works but fan air does not blow


If you have a late model GM car and the system is controlled electronically the blend door actuator becomes weak. When this situation occurs it will not move the air direction door inside of the heater/air conditioner plenum. in your case not to the vents Replace the actuator with new and recheck the system. i hope this helps

Jul 24, 2009 | 1995 Oldsmobile Cutlass Ciera

1 Answer

Air blowing out defroster vents and floor vents


Check your vacuum lines; you probably have a vacuum leak that is preventing the flaps from closing and opening upon "command."

Jun 13, 2009 | 1985 Oldsmobile Cutlass Supreme

1 Answer

Heat problem


Low heat is most commonly caused by a low coolant level in the radiator. I have a 1995 Cutlass supreme that only blows out the floor and defroster vents. I had fixed it once before, but it is acting up again. There is a controler box behind the glove box that controls which vents open up. Two things could possibly be wrong in the area. One....the electrical connector could be loose or dirty. Two....The vacuum hose running to the clear plastic vacuum manifold near the controller box has been cracked or broken or burned through and is not providing vacuum to the vent doors. I know this sounds complicated, but if you remove the glove box door and box liner, the controller box and clear rubber vacuum manifold will be evident. The eletrical connector has 4-6 small gauge wires in it and a white terminal end. The vacuum manifold has one black vacuum hose and several colored hose running from it.

Jan 07, 2009 | 1989 Oldsmobile Cutlass Supreme

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