Question about 2001 Oldsmobile Aurora

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A/c compressors works fine most of the time at start up but after a few minutes the clutch kicks in and out rapidly & then shuts down completely. blower seems fine & all ac lights work the compressor just wont kick in again. presure seems fine when it works. & the system is full. today it will not come on at all. but most of the time it will come on when you frst start the car. there is no major compressor noise.

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  • 39 Answers

Try to jump the low pressure switch, and monitoryour pressures with a gauge, if everything looks normal, try a new switch

Posted on Aug 04, 2009

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Posted on Jan 02, 2017

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Hi, first of all, you will want to verify that your compressor is kicking on. Open hood and located A/C compressor. Have a helper start the engine and and then turn on A/C to maximum with blower at full speed. See if you hear and observe the compressor kick on. The outer portion of the compressor outside the pulley is the clutch. It should make a click and begin to spin along with the pulley. If it kicks on ok, does your cooling fan at the radiator kick on also? May need to run the engine a few minutes to verify that. If so and you are reading a full charge at the low pressure port at this time, you have air in the system and it should be completely emptied and then re-filled with around 3 LBS of R134a refrigerant until you read a low pressure side of 45-50 PSI. Then you will be blowing cold air.
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