Question about Oldsmobile Aurora

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AC dampers don't seem to respond and all I get is hot air. AC is fully charged and no leaks but shop says it is the dampers and that needs dealer repair. Are the dampers vacuum or electric and is there a module that controls them. They seem to operate to change oulets and to defrost but always hot air.

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  • Oldsmobile Master
  • 5,568 Answers

Before I would go to the dealer and for future questions, I suggest you purchase an aftermarket service manual.

The ~$35 US might save you a whole lot of money if you don't have a dealer you know to be trustworthy.

You didn't have the year given but it is probably in this range:

http://www.autopartswarehouse.com/search/?N=11413+1686+4294967268+9305

Posted on Jul 21, 2008

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Posted on Jan 02, 2017

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1 Answer

Heater core hot but not in cabin


the damper at the core must be open,
so the rules are" (heat exchangers) 101
1: hot engine, yes.
2: hot core, yes. (water must flow and both tubes hot to core)
3: air flow through core, not. (fix cause, if blower is running on high
then the damper is closed.
do you need a drawing? the FSM covers that , all cars, factory service manual even shows every step, in diagnosis.
1990 is a toyota corolla. so books on that car , match too.. hint?

they make 2 kinds if 1990
one with cable damper (temp)
and with water valve. got valve>y/n, no then its damper
this is a cable car, so the cable must move the valve or the damper
open fully to get hot air

valve below. (1990 corolla book)

using 2 persons, make sure the valve works
and is not clogged inside. it.

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2 Answers

Why ac blowing hot air


start off with the cheap possibilities and make your way threw.
I'd start off with replacing Air Charge temperature sensor, make sure your AC Hose isnt leaking anywhere, if those dont solve it then replace ur AC clutch, last chance would be replacing AC compressor. sometimes the compressor will malfunction randomly. or the AC clutch might malfunction aswell. covering these steps somewhere along the line you will have working AC again! good luck

May 18, 2013 | Volvo V70 Cars & Trucks

1 Answer

I have a 2000 Dodge Ram 1500 that will blow cold and hot air for only a few minutes. After that is only ambient air temps. It is a 5.7 ltr, automatic with only one set of climate controls. The heater core...


you say it will blow cold and hot air for only a few minutes. You don't say but I assume you mean will blow cold a few min. when turned on AC max , blow hot only a few min. when turned to heater hot. Assuming thats the situation and you say AC charged and shows good on the low side -you should charge the AC to a full charge on the low side will cause problems with the AC air compressor kicking on and off. I suggest while the engine is running and turned to AC cold max watch the AC air compressor clutch to see if it does indeed kick on and off if so charge completely. As far as the heater make certain you coolant is all the way to the top and the best way to do this is when engine is completely cold remove radiator cap and fill completely and completely close cap then fill overflow container just to the cold level. That should fix your problem.

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1 Answer

My a/c blows hot air


Most likely if it is blowing hot air, and everything including compressor seems to be working, it needs a charge of freon. You can pick up a bottle of freon at Auto Zone, they sell bottle of freon and even has a guage on it. If you drive the car in there and pop the hood, they will show you where you hook it up. It even tells you step by step on the can how to do it. But just to give you a recap of how you do it: You first have Auto Zone tell you the connection on your car where to tap the hose off the can to. You start engine, turn on the AC at full speed, and shake can real good, hook hose up to the connection that Auto Zone showed you, and turn can ( light shake) while its hooked up from a 12 noon position to a 3 O'clock position back and forth while depressing can every 10 seconds. Pretty easy to charge your own AC.

Now realize that the reason your car is just blowing warm air, is most likely it is low on freon, but don't forget it is very possible it is low or out, is because of a leak. DO NOT get suckered by these auto shops saying, you have a leak and we have to do this and that and all that. Cause they will charge you a lot of money to check it. First step is to try and charge system first and see how it works. The freon can at Auto Zone runs around 30 bucks, worth the cost to see if that solves it. Otherwise a shop could cost you a few hundred for the same results of just charging like you did for 30 bucks. If this does not work, then you can have them put system under pressure to see if a major leak in line somewhere. Thanks Mike
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1 Answer

Just had ac charge by dealer it is blowing hot air 2004 ford excu


Take it to a different dealer since they are rip offs it looks to me. The dye will pin point leaks very easily

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2 Answers

AC dont work and heater door seems stuck in the heating position


You seem to be on the right track. You can manually jump the compressor clutch, to come on and see if she blows cold air. Follow
the compressor clutch wiring back to the evaporator. There should be
a 2 wire harness there with a connector. Take the wiring connector off
and install a small jumper wire between the 2 terminals. this should
automatically make your compressor clutch engage , regardless of
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the vacumm hose in the engine bay and try to locate the damper in
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1 Answer

Heater always seems to be on


you my have a bad ground in the motor blower swicth allso have you dampers check there my by a vacumm leak which means there not shutting to keep out the hot air if you don hear the damper opening and closing when you go from heat to a/c thats most likely your problem

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2 Answers

99 STS AC is blowing hot air


I had the same problem but it was blowing hot air on the passenger side of the car. I assume you have the dual zone controls that I have as well. The problem is most likely the damper that controls the flow of hot and cold air into the car. The motorized component of the damper is most likely not working and its stuck in the hot air position.

I had mine replaced by a repair shop so I cant tell you how to replace it but it may be something that you can do if you have the time and patience to work on it.

Good luck

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1 Answer

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Why do they want to replace the compressor?noisy?If you can put a charge on the ac then it's hot again after a day,then you have a leak.all the ac lines have o-rings where they are connected.without put dye in the system you wont know for sure.So I would try that first.

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1 Answer

A/c problems


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