Question about 1999 Oldsmobile Intrigue

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AC/Heat goes on and off

My AC works fine when it is on and so does the heat and all the controls, but sometimes you will have it on, then stop somewhere, get back in the car and nothing the screen is blank and the controls do not work. Then you will be going along and all of a sudden it is back on and working. If it is on, when it stops working, then it is still on, when it starts working again. Same with it being in the off position. It makes no unusual noises at all. I can tell you, that when it is working so does the cruise control and the automatic headlights, but when it is not working then niether do the other items. It may do this off and on throughout the day and had gone off and stayed out for as long as 2 days. Then comes back on all of a sudden and works fine.

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  • Anonymous Dec 02, 2008

    Same problem with the additon of the automatic headlights go off when the A/C compresor clutch is powered. I have purchased a climate control module from e bay. Will advise if this fixes the problem. Everyone I have talked with thinks it sounds like a ground problem or a overcurrent problem.

  • Anonymous Dec 26, 2008

    Same thing here started with cold weather. Had one positive idea on the ignition switch on goooogle.



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  • 193 Answers

Your first area you need to look at is your fuseable links. It sounds as if you have one burned inside the coating. Grab each link and move it back and forth in your fingers. Try to determine if one is broken on the inside.

Posted on Nov 23, 2008


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There is a blender that controls the air flow to go through the heater core for heat, and the evaporator for AC. It very well could be stuck.

You maybe able to try and get it to get unstuck by running the cars AC and switching from heat to AC back and forth and see if it gets unstuck. Just turn it on full blast and go from heat to cool.

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