Question about 2005 Buick LeSabre

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AC Problems Was making a noise from the clutch or compressor. Sprayed lube and noise decreased. Charged unit to 50 and now ac is cold and noise is bearable but the motor is sluggish on hills and does not want to accelerate.

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  • Buick Master
  • 14,036 Answers

Dont run AC sound like AC COMPRESSOR getting ready lock up the AC clutch pulley bearing locking up.

Posted on Jul 10, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: 2001 buick lesabre-ac problems

  • Assumed your AC unit is OK, but uneven temperature distribution. Try to throw the heater on an off severtime. A sticky valve on the heater would cause similar problem.
  • Observe the RPM while parking your car. While the AC cut in cut out (or turn on an off). If it cause no load on the engine. The freon may be low or the compressor is bad. In this case only the intake side of the evaporator is cooler than the other side.

Posted on Jun 04, 2009

jorgemart736
  • 1 Answer

SOURCE: remove clutch for ac compressor

I just removed the a/c clutch on my 1994 lesabre with a puller tool that I bought from RJ tools through EBAY for $23

Posted on Jun 19, 2009

honeymokey
  • 3113 Answers

SOURCE: ac clutch-1988 buick regal

It's low on freon

Posted on Apr 09, 2010

  • 1608 Answers

SOURCE: 98 BUICK REGAL GS AC compressor will not come on.

If the outside temp.sensor is reading -38 degrees then this is what is causing the compressor not to come on.You need to check the wiring to the outside temp.sensor and the sensor.Make sure it is connected.It is located on the front grill area.Between the grill and the bumper cover.Hope this helps.Good luck.

Posted on May 19, 2010

cool78259
  • 228 Answers

SOURCE: ac was working fine the

Check the low switch by the dryer or accumulator, its a long narrow cannister,

it will have a pressure switch attached to it or near it. put your, ac on high,

pull the molex off the switch and jump the molex with a wire or paperclip,

if the compressor comes on and the ac starts to cool, you will just need

to replace the low pressure switch, if the clutch does not come on,

check the low switch molex to see if there is 12vlts there. good luck!

Posted on Jun 28, 2011

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You've got some of the picture, but not all of it.
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I think the air compressor is bad in the truck


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Screeching noise, then a/c stops blowing cold air. Still blows air, just not cold air.


it could be the air conditioning clutch going out. to check turn your car on and idle it with ac on and hood open. at the ac compressor it will have a pulley on it with a clutch that engages when the air conditioning is on. if it engages and disengages it can be the clutch itself has gone bad, the ac clutch will also disengage if there is not enough freon in the ac system, will also engage and disengage if the pressure gets too high in the ac system. Depending on the year of the vehicle it will disengage at full throttle and come back on when you are not at full throttle.
If it is a metallic sounding screech for example take a coke can and drag it across pavement kind of sound it could be a bad compressor or a bad ac clutch. If it is a more rubbery sound for example a car spinning its tires kind of noise it could be a loose belt.

1. Check to make sure all belts are tight under hood
2. start car and look at ac compressor to make sure compressor pulley is turning and that the fan clutch is engaged spinning


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