Question about 1993 Buick Regal

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AC not cold on 93 Buick Regal Custom 3.8l

AC is not too cold, I recharge the freon, compressor runs. Someone said the evaporator gone out on it or needs cleaning. How can you tell if evaporator gone out on it.

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Hi, it could be overcharged and frozen solid, or clogged with debris, thus air cant flow through the coil and you get very little cooling, they make this areosol cleaner solution at the auto parts store that supposedly cleans the coil under the dash, you have to drill a small hole in the housing of the evaporator and spray that stufff in there and its supposed to dissolve the debris if that doesent work try exhausing some of the refrigerant out of the system in small increments so the compressor cycles on and off, not on all the time continuously. good luck! J

Posted on Aug 15, 2008

  • Jude Meredith
    Jude Meredith Aug 15, 2008

    hi again, it could be undercharged also, try another can of refrigerant, what you want is that compressor to cycle, not run all the time, also be careful when you drill that air duct, be careful not to drill to far into the coil! J

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1 Answer

95 Buick evaporator coil


It depends on the problem. Either you don't have enough air passing thru the evap core, or the level of freon is not right, or there is a restriction in the ac lines.
A mechanic would use a set of pressure gauges to check freon flow.

Jun 02, 2013 | 1993 Buick Regal

1 Answer

On 2002 buick regal ac problems. Tried a jumper wire from the pressure switch on high side( smaller ac line ) . no switch on low side by accumalator. vOLTAGE THROUGH WIRES ON HIGH SIDE. NO VOLTAGE GOING TO...


Does the system have a leak? If it does, then the computer might have set a low freon code that usually does not turn on the check engine light by itself. If this occurs, the code will have to be erased before the compressor will run. The computer does this in order to protect the compressor so that it cannot run without enough freon in the system. Once you correct the amount of freon in the system (if it needs it), reset the system and see if the compressor will run. Some parts stores have the ability to erase codes and will usually do it for free. I hope this solves your problem. It's definitely not good to have AC problems this time of year. Thanks for trying Fixya.com.

Jun 29, 2011 | 2002 Buick Regal

1 Answer

Where do I add freon ?


If you have to ask that question, you don't have the equipment, (gauges, etc) to be able to safely recharge your AC circuit in your 1993 Buick Regal!

Sorry to be blunt, but you could cause more problems than you would fix if you try to do it yourself.
Do you know what freon is in the system now? You have to recharge with the same type and since you have an older car you probably have old type in it, which means you have to evacuate the system and capture the freon (and dispose of it) and then recharge with the right amount of new type freon.

Jun 03, 2011 | 1993 Buick Regal

1 Answer

Looks like a faceplate or some sort of front cover on the ac compressor looks like it broke free. Possibly bolts snapped off?


The ac compressor has a clutch on the front end where the belt pulley runs. When the ac is off the clutch disengages and the compressor stops running. The pulley will continue to turn with the engine. If the belt is running normally and that pulley is turning normally along with the other accessories on the belt, it may not be broken, just that the clutch is disengaged. If it is still in place and spinning then your clutch is probably not broken, but more likely you are low on freon. When the freon is low a switch tells the compressor not to come on, and only the pulley will turn. Your ac will not get cold. There may also be other reasons the clutch won't pull in, such as fuses and such.

Sep 22, 2010 | 1993 Buick Regal

3 Answers

98 buick century AC blows cold air on passenger side and hot air on drivers side..when we recharged the unit, it worked cold air for a few days and now blowing hot air again.


Hi. There seems to be a blockage within the system. I will list all parts to be checked by your mechanical. I would also have the blend door linkages or servos inspected for fail points along with the listed areas of concern, below:

Loose or broken drive belt
Inoperative compressor or slipping compressor clutch
Defective expansion valve
Clogged expansion valve, receiver-drier or liquid refrigerant line
Blown fuse
Leaking component: any of the parts listed above or one of the A/C lines, hoses or seals.

Instruct your mechanic to check all the above, along with the dash blend door linkages for faults.

Aug 11, 2010 | 1998 Buick Century

1 Answer

Le sabre 1991 ltd handbook air conditioning is not very cold out of the vent


I had the same problem with my LeSabre. I took it to a mechanic and he found nothing wrong. Said it was an old car and things like that go out. I took it to a local ac repair shop. Turns out that the ac needed recharging. Anytime the freon is low, the ac compressor will not engage, to prevent the compressor from burning up. Freon contains oil that lubricates the internal parts of the compressor. Have the system checked to find out if a simple recharge is needed.

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2 Answers

My 93 buick regal custom 3.8l has a bad ac pump and makes an aweful noise when running. The ac doesnt work and the 'clutch' on the pump spins freely, is this an easy fix or do i need a new ac pump?


you would need a new a/c pump, however you you didnt want to replace it and could live with out the a/c, a cheaper option is to replace the belt and bypass the a/c. Most auto parts store will sell you a belt of the correct dimensions if you tell them you wish to bypass the a/c. I've done this for many customers. It can be done on just about any motor.

Best of Luck.....

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1 Answer

2006 Chevy Equinox A/C freezes up and stops blowing cold air...Has been to the shop 3 times twice they evacuated and recharged the freon. Last time they recalibrated the BCM and did the freon again. Still...


Actually there is a evaporator tempature sensor that has gone bad that is causing it to freeze up like that because it cycles the compressor on and off to prevent this freezup and vwhen the sensor goes badf the compressor will continuasly run all the time. $4e0.00 part.

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