Question about 2001 Oldsmobile Aurora

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Low refrigerant prevents the a/c pump from kicking on due to the low pressure switch. i would try to fill with a can of R134 (refrigerant) from the auto parts store. the low pressure switch may have gone bad. When applying the R134 refrigerant, where does it go? Can i do it myself. After applying the regfrigerant and if that does not help could it be the low pressure switch? If the low pressure switch is gone is it expense to repair.

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  • Oldsmobile Master
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Low pressue switch rarely, if ever go bad. Do not mix 134 with r-12. Ck twhich one the system uses.
Servicing the A/C - Kits are sold at auto parts stores. While there, ask the counter person if he would show you the connection port. It's on side of the system that comes out of the heater box on thefirewall in front of passenger. .

Posted on May 23, 2009

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  • Oldsmobile Master
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This is really one area that should be left to the guys with the correct equipment. But, if you want to try putting some gas in there, it goes into the low side (fatter line) (put a temporary jumper on the low pressure switch connector to get the compressor running) Only use freon that dosen't have sealer or dye in it. (it won't help you and can really mess up a shops expensive equipment if it's in there.) The cans with a gauge are inaccurate but better than nothing. If you need more than one can, you probably have a serious leak, so stop there.

Posted on May 23, 2009

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2 Answers

Should the compressor engage before we start filling the R134? or during the filling? or do we potentially have a Hi/low pressure switch problem?


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2 Answers

Where do i add r134 on the 99 buick regal , I see to nozzles under the hood one to the right boy wheel shock and the other back center closr to firewall


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1 Answer

Were is the low pressure switch for the ac


thats located on the condenser (in front of the radiator) .. it will be near or on the large (low pressure) pipe as it enters the condenser .. you can suspect it if there is proper refrigerant pressure in the system yet the compressor clutch will not operate ... R134 refrigerant is a small molicule so its hard to keep it from leaking .. if enough leaks out then the low pressure switch will prevent operaton of the clutch ...

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1 Answer

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low refrigerant prevents the a/c pump from kicking on due to the low pressure switch. i would try to fill with a can of R134 (refrigerant) from the auto parts store. the low pressure switch may have gone bad.

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3 Answers

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