Question about Oldsmobile Cutlass

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How do u open the heat vent on a cutlass 85 the wire is not open the heat vent up all the way no heat...

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Heat vent is vacuum activated on 85 cutty. Under hood on right side inner fender well look for a round black plastic ball . Should have two vacuum lines coming off it. The ball is a vacuum accumulator and provides pressure that opens the heater vent.

Posted on Nov 19, 2014

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Freightliner columbia wont blow heat into cab have replaced thermostats and heater core blend doors work heater core gets hot and blower works but air from vents only gets to 80 deg


The air from the heater core will be as hot as the coolant temperature of the engine. 80 Degrees is the opening temperature of the thermostat and that will be where it remains until the engine starts to work or the ambient temperature rises.
Thermostats come in a couple of different opening temperatures so check around for one that opens around 85 degrees if you want hotter air in the cab
Another point is to close the recirculating vent door to the cabin as the heater core is trying to heat fresh freezing air if it is open

Jan 09, 2015 | Cars & Trucks

1 Answer

No heat just a/c


Low coolant level in engine will result in no coolant reaching interior heat exchanger. Otherwise, check environmental controls. Feel heater hoses under hood to see if they get warm when engine is warm. Could be control valve is not being opened to allow hot coolant into interior heat exchanger.

Feb 22, 2014 | 2000 Buick LeSabre

1 Answer

On '85 cutlass temp control, the air defrost lever


Do you mean the control lever is stuck, or you move it and nothing happens ? If the lever is stuck you would pull the control panel out and check the operation. Most of the models used vac to move the blend doors.

Jun 22, 2013 | Cars & Trucks

1 Answer

Little heat coming out of vents on my 1999 cutlass


You may have air in your lines. Open your radiator, then start your car and let it run for a while, add coolant when it drops low. There are bleeder screws on your car for your coolant. When the car is at normal operating tempature open your bleeders untill coolant starts to come out. On my 3.8L V6 you just have to follow the top coolant hose to where it connects to the intake. You will most likely need a flat head screw driver to open it. Then as the coolant drops again keep adding coolant. You may want to have a drop pan and tarp under the car, coolant will pour out of the radiator at times. Not a ton, but don't be concerned. This may take up to 20-30 minutes to complete. If you open the bleeder and coolant comes out right away it would lead away from air in your lines. Last thing have your heat on in the car the whole time. Hope this helps.

Jan 25, 2013 | 1999 Oldsmobile Cutlass

1 Answer

No heat heater core is warm fan blows cold


Have you check the vent shut off valve. It's behind the glove box and you may have to manually open it to get heat or air.

Jan 29, 2010 | 1994 Oldsmobile Cutlass Supreme

1 Answer

95 Cutlass Supreme Fan only blows on lower vent


It's been awhile but I think the doors are vacum operated

Aug 25, 2009 | 1995 Oldsmobile Cutlass Supreme

1 Answer

OLDSMOBILE CUTLASS CALAIS HEADLIGHTS DON'T COME ON


is your car a 79 or an 85?if it's a 79 you probably need to repace the dimmer switch on the floor,may be the same for a 85.

Jul 30, 2009 | 1985 Oldsmobile Cutlass Salon

1 Answer

My heater and or a/c wont blow through the vents in my car.


Its your blower motor...check for a bad fuze, then check the wiring...but all in all the blower motor is not functioning. GTCC mechanic.

Jan 25, 2009 | 1993 Oldsmobile Cutlass Ciera

1 Answer

Main gate won't open, blower works but can't blow air in past gt


I had a 90 Cutlass Supreme that did that too. I just got into the dash and forced the arm on the main gate open.

Jan 24, 2009 | 1991 Oldsmobile Ninety Eight Regency

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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