Question about 1997 Pontiac Grand Am

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Pontiac 1997 Grand Am

How do I know if my ac compressor is not working? When I turn it on i blows hot air not cold. We put coolent in but still does not cool.

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It's probably just out of free on in the compressor because if the compressor was out then the belt would lock up.You can get free on from auto zone,advanced auto parts ect. get some of that then there should be a thing on the compressor that looks like a valve stim on a tire read the directions and go from there but im pretty sure thats the problem.Free on is not very cheap though it's about $30 for two small cans of it.

Posted on Nov 09, 2008

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1 Answer

97 grandam ac isnt blowing cold


Is the compressor working when the engine is running and the ac is switched on ?

Jul 10, 2012 | 1997 Pontiac Grand Am

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Air cinditioning wont stay on, it switches to heat and wont shut off


What do you mean when you say it wont shut off? is it blowing hot air or do you just feel a lite flow of hot air even if you have the settings to cold?

If this is the problem that you always feel hot air at low flow and the ac goes to hot air then i would say one of two things, first if you have the selector to cold and you feel hot air then there may be a problem with the blend door, this door move to allow hot or cold air, the door may be broken or just a bad motor that controls it. keep in mind if the ac system shuts down for any reason the air then will be warm, it will be about the same temp as outside and maybe a little hotter.

this problem almost sounds like the ac compressor shuts off and then you are getting the outside air which is hot, there are many reasons for the compressor to shut off, it could be the compressor clutch heating up and disengaging , this would be due to a bad compressor clutch.

another reason is the fans are not working, the best thing to do is when the system starts to blow warm check and see if the compressor is running, start engine and look at the front of compressor, with ac off the front of it will not move, and then with ac on the front will spin, check it out and let me know, if it blows warm air and ac is not working then it may be compressor problem but if you are getting warm air and the compressor is spinning then it may be a door problem.

This is hard to check with out testing the system, so i listed a few things to check and let me know the out come. also the ac blows cold for how long before it gets hot air blowing out of the vents, good day.

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I have heat for defrost but when i turn it to cold to put the a/c on it blows out hot air. i thought it just needed more freigon but it wouldnt take it could it be the compressor has gone bad?


Not necessarly, have the pressures checked on your ac system, that will determine if the compressor is weak. Could be you have a blend or an accutator door not opening for it to blow cold air, or several other reasons.

Jul 16, 2011 | 2003 Pontiac Grand Am

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With regards to you a/c not blowing cold there are several faults that could cause this. Your compressor may not be working, they may be a restriction in your A/C lines, your compressor and/or evaporator may be clogged, you may have a leak, or i could be something as simple as fuse.

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check the temp control switch in the dash

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Damper/flap for driver's side is probably stuck. Try moving the selector from cold to hot several times. Also, move the recirc/outside air control if the previous doesn't work.

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