Thanks for the input on the 2oo2 buick regal. I put ac guages on the system and it has enough PRESSURE in the system. It has been working fine for 4 to 5 years and one morning it just stopped. I will go to autone and have the codes check. There is no leaks in the system. I push the ac button on at the controls and the little orange light which indicates the clutch being engage. stop lighting up. This problem just happen overnight. AC HAD BEEN COOLONG FINE. iT DOES SEEMS LIKE SOMETHING HAS CODED OUT. iM STUNG. dO YOU THINJG IT COULD NE IN THE COMPUTER NOT SENDING THE MESSAGE TO THE SYSTEM? tHANKS FOR ANY INPUT.

I think you have a low pressure situation. To prove or disprove, find the pressure switch and short it out (so the system thinks the switch is indicating sufficient pressure). You can have near sufficient pressure ("OK" pressure) and you can have cooling but your system knows if it is low or not.

My AC worked fine, I thought. It cycled on and off very rapidly - I thought this was normal. It is a 'new' vehicle to me. Pressure was 'ok' but not perfect. When I added one can, it made a world of difference. Mine is a 1994, BTW. I am certain some freon had gone from the system.

I don't think the computer controls the AC - but don't know this for a fact. I suggest you have this system checked by a automobile AC pro for best results.

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