Question about 1998 Oldsmobile Intrigue

9 Answers

Passenger side vents blow only hot air

The drivers side works fine with heat and air conditioning. I have replaced the control unit with the same model number, that does not correct the problem, can't believe that both modules would have the same problem. The gate is not stuck. The servo motor works. But the passenger side control nobe does nothing to add cold air to the mix for the passenger side.

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  • Robert Byers Mar 13, 2009

    The compressor and freon where recently replaced.

  • Robert Byers Mar 13, 2009

    I have had the dash ducting inspected and there is no sticking door.

  • Robert Byers Mar 13, 2009

    Ther servo motors have been checked and appear to be working, but there is no signal to actuate.

  • Robert Byers Mar 13, 2009

    The mechanic at my local garage has pulled the dash apart and checked the gates and motors that serve the ducts. There appears to be no problem with them. The AC controller checks out for continuity. There was no evidence of a short in wiring. Good AC comes out of the driver side ducts. The front defroster seems to work OK. Changing from the inside to outside air seems to work.?????

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  • Oldsmobile Master
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You need to have the climate cntrol switch tested, you may also need to access teh heater core to check wirings and air ducts in there. Accessing the heater core is not easy.

Posted on Mar 16, 2009

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Ask the mechanic to check the vents leading to the air ducts inside the car and see where it starts to get hot. Then you will know where the problem begins and you can find the problem either nearby where it gets hot or behind where it gets hot. Also make sure there are no holes in the ducts that could let cool air leak out.

Posted on Mar 13, 2009

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  • Oldsmobile Master
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I have been aware of this issue for some time on this model of Olds, the problem is the climate control unit in the dash or the passenger side ambient air temp sensor, I have ruled out the blend door actuator because u said tech checked this, and I assume has seen it move and control air temp. I would replace the air temp sensor for the passenger side, that seems to be the most likely culprit.

Posted on Mar 13, 2009

  • yadayada
    yadayada Mar 13, 2009

    Also try completely disconnecting the battery for 1 hour then reconnect it. That should reset some door that controls the airflow. I just experienced hot air blowing on the pass side and cold air on the drivers side. I did the reset and now I have heat on both sides. Hope it works for you.

    This was posted by another owner of same year same problem;.

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Check out  "mono-valve insert". if they are faulty or if there's a flap that's not closing instead. The check is easy: Feel if the output side of the monovalve (in your case, it is a duo-valve, there are two) is hot when the system is calling for cold. If it is, the monovalve(s) are not closing, that is their normal failure mode.So, in ten minutes with your own hands, figure out which (if either) of the monovalves is open - and replace it.
If the output is not hot (it may be warm from conducted heat though), then you need to look into the heater flaps. 

Posted on Mar 13, 2009

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As you have stated that compressor has been replaced.so please check out the thermostat if the thermostat looks proper and stable then the heater core may be stopped up. This can be cleaned by removing the heater hoses under the hood of the van and running water through the heater from a water hose. Disconnect the hoses from the front of the engine.

Posted on Mar 13, 2009

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Sounds mysterious.
Did you check with a mechanic? You could do a AC performance check to figure out whats exactly is the problem. With known mechanics, you can do this for ~ 20 bucks.

Posted on Mar 13, 2009

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There are two servo motors one per side.for the blend doors.

Posted on Mar 13, 2009

  • mike loshbough
    mike loshbough Mar 13, 2009

    there is a tsb on this problem but my list is at work tomorrow i can give you an exact answer.but also the dealer will have a copy of this tsb.if they cooperate with you.

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There is a blend door not operating properly the dash will have to be removed to repair most likely

Posted on Mar 13, 2009

  • livetech Mar 13, 2009

    ok then THE DUAL CLIMATE CONTROL VALVE IS BAD OR YOU SIMPLY HAVE THE DRIVERS SIDE ON HEAT.also check maybe The blend door actuator may not be working

  • livetech Mar 13, 2009

    also check this link for more info:
    http://www.imcool.com/articles/aircondit...



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Check the freon is level?

Posted on Mar 13, 2009

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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


------------

No heat on Oldsmobile Silhouette?


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

------------

Heater blows cold?

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

-----------

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

----------

Hot air on the driver's side vents only?

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

--------------

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

-----------

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

--------------

No heat, blower blows only cold?

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

----------

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?

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AC not blowing through Vents on 2007 Chevy Trailblazer?

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Passenger side temperature is warm air out of dash vents?

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These will help.

Thanks.

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No heat from vents


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

------------

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

-----------

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

----------

Hot air on the driver's side vents only?

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

--------------

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

-----------

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

--------------


No heat, blower blows only cold?

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

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

---------

Ac vacuum line on dodge cummins?

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

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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


-------------

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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