Question about 1995 Oldsmobile Cutlass Supreme

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I have a 1995 Oldsmobile Cutlass Surpreme and the AC blows out of the deforst lower and upper vents but does not blow out of dash vents. Any suggestions?

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Check the vacuum line that comes to the firewall. It should come off the intake manifold and then branch off to the firewall. sometimes they get disconnected or broken.

Posted on May 01, 2010

Testimonial: "Thanks will check that as soon as I get home."

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1 Answer

'92 Olds CC SC air won't blow through the vents.


Chances are you lost vac to the control or the blend door under the dash. Most models built before 1999 used engine vac to move the blend doors. You may need a shop manual to get the diagrams to trace the vac lines.

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Air not blowing out dash vents


It sounds like one of the blend doors is either stuck or the component that moves it is not working. The component could be powered by vac or electric. You may need a shop manual to get the repair instructions.

Jul 10, 2013 | 1995 Oldsmobile Cutlass Supreme

1 Answer

Left Vents blow warm/hot air when calling for cold air


Usually a sign of a faulty blend door under the dash.
The blend doors direct air thru the ac and heater core along with the upper and lower vents.

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1 Answer

1989 int. cutlass supreme-2.8lt- heater not blowing any hot air, fan works fine,def.,mid level, upper, lower functions work just fine when buttons pushed. When I turn the temp. control down to 60 the...


Your closing in. There is a motor that will open the heater core venting to allow it to blow into the car. Get a heater core install picture from your auto parts dealer or car dealer for specs of where and how it is driven.

Apr 17, 2011 | 1989 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

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

At about 40 to 45 mph a/c stops blowing through vents


Your problem is loss of vacuum that is for sure, the source is the engine, it comes through the firewall on the passenger side, if u have good vacuum to the source then replace the vacuum mode control switch in the dash at the heater AC control..

Apr 21, 2009 | 1995 Oldsmobile Cutlass Supreme

1 Answer

Heat wont blow through heater or defroster vents


common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

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1 Answer

Dashboard AC Vents don't work


check the vent housing under dash it is vacuum controled most likley you got a line off or broken not allowing door inside to open worse case scenerio the acuator on it has gone out and needs replaced hope this helps

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