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My 1995 Buick Lesabre a/c compressor suddenly won't come on. Pretty certain it has freon as it worked well yesterday? Does coolant level affect it?

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Yes. They have a low pressure switch, and won't cut in if they are low.

Posted on May 24, 2011

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1 Answer

My 1989 buick lesabre won't start! After having


Not anymore it isn't a nice car
Sounds like oil & coolant come out
into the coolant recovery bottle
You lost a head gasket or thermostat
stuck closed
I think it's time after 24 years to send it
to car heaven & take the tax write off

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1995 Buick Century blowing hot air.


A mechanic would check the system with a set of pressure gauges. If the compressor is running, the low side would read around 30psi and the high side would be around 250psi. That is how you know if the system is full of freon or not.
You may have to get a professional diagnosis to proceed. If you replace the compressor, the accumulator needs to be replaced and a vac pump is used to pull all of the air out before the freon is added.

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I just put a new battery in my 1995 buick lesabre But It won't start. It turns over great but it won't fire up. Is there a fuse Ior a circuit breaker somewhere under the hood I checked the fus


there should be an ignition fuse in the fuse panel that mite be it
also you need to make sure it is gettin fuel and fire to narrow the problem
down . how long has the car been sitting ?

Feb 16, 2013 | 1995 Buick LeSabre

2 Answers

What's your problem?ac compresor seems like dont recive energy


There are 2 safety switches in most A/C systems. A high and low pressure sensor will cut off the Compressor clutch. You can borrow a gauge set, called Manifold gauges, from tool loaner programs at Autozone, Advance, or Oreilys autoparts.

There are several ways to try to fix this. It depends on what the pressure gauges show.

If the pressure is low, but not empty, there is hope. The old Freon leaked out. It will happen again. But there are products which can plug some leaks. Then add Freon using the gauges. The ideal amount is an amount that makes the compressor stay on the longest. There are gauges that can tell you, color coded, and reasonable priced.

If the system is completely empty, it is contaminated with outside air. The Freon will not function correctly if added and a new Dryer(A/C part) should be installed. There is a Vacuum pump which must be attached to draw down the system to a negative vacuum. So even changing a part will not decontaminate the system without the pump. Pump can be loaned from Autozone with big deposit which is returned, no hassle. Some parts require special pliers and "O" rings to reinstall.

The price of Freon has skyrocketed. What once costed $12 to refill a car now costs $50. So going to a repair shop can be a better idea if you waste Freon doing it yourself. If you don't repair the leak, imagine $50 evaporating into the wind with the Freon.

Apr 14, 2012 | 1994 Buick LeSabre

2 Answers

1999 Buick Le Sabre Custom, My heat, and defrost work fine, but my car won't cool when I turn on the AC. My air conditioning is charged and the blowers work fine but why wont they blow cold air?


The first I would do is check if the a/c compressor is working. Start vehicle then turn a/c on in vehicle full power and then off/on a couple of times if you hear a click when turned on then compressor is working properly.If this is the case then you need freon.If not turning on,first check fuses,for location refer to owners manual,if not fuse then compressor needs to be checked which then you will need service manual purchase at local autoparts store.

Jun 24, 2011 | 1999 Buick LeSabre

2 Answers

Timming chains....... engines not starting, just rotates and blows water out of the radiator when caps off. points and sparks lokks good, I sucpect, it might be the T/chains


Hello robtui: My name is Roger and I will help with your problem. The engine cranks over and does not start? Collant is belched out of the radiator? Problem is a warped head(s).Blown head gasket or cracked head. Remove the spark plugs fill the coolant system and you should see coolant fill and run out a spark plug hole. The engine should of had a miss before this happend. You could also do a compression test instead of filling the radiator and looking for coolant to run out. Either way you will find a cylinder compression leaking to the coolant passage. Should you need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Roger

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1 Answer

I am doing a full evacuation and recharger on a 1995 buick lesabre and I need to know how much compressor oil and the viscosity of the replacement oil Can anyone help?


r-134, 39 oz of freon, pag 150 oil, 8 oz oil, now that is the capacity for a new compressor and systen cleaned, or you need to drain yours old compressor and add half to the compressor and half into the accumalator/drier to have the correct oil amount in the system.

May 21, 2011 | 1995 Buick LeSabre

1 Answer

I have a 1990 LeSabre Station Wagon that hasn't been run much over the past 10 years. We have run it a little the past year and the air conditioner isn't working. I changed over the fittings to...


this is normal as there isn`t enough freon to keep the clutch on long enough to do anything thus lack of pressure in the system.also there won`t be enough freon and pressure in the system to show up any leak if there is one.

May 09, 2011 | Buick LeSabre Cars & Trucks

1 Answer

Ac compressor has been change and charged with three can and the blower work but the compressor will not come on


mcdevito75 here, You may need even more freon in the system. If you know where the A/C clutch switch is you can jump it with a wire to get the compressor going to circulate the freon. Best bet let your local shop handl this job.

Jun 17, 2010 | 1995 Buick LeSabre

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