Question about 1993 GMC Suburban
TRAVIS , SOUNDS LIKE YOUR COMPRESSOR HAS FAILED INTERNALLY. THIS CAN HAPPEN FOR A COUPLE DIFFERENT REASONS LIKE LACK OF OIL IN THE A/C SYSTEM OR IN THE CRANKCASE OF THE COMPRESSOR ITSELF. DID YOU CHARGE IT WITH A RECHARGE CAN FROM AN AUTO PTS. STORE RECENTLY? THE COMPRESSOR COULD HAVE REACHED ITS LIFE EXPECTANCY ALSO. YOU SHOULD CHECK FOR DISCHARGE OF METAL FROM COMPRESSOR IF REPLACING AND POSS. INSTALL AN INLINE FILTER IF NEEDED. IT IS ALWAYS GOOD TO REPLACE THE RECIEVER DRIER IF YOU SUSPECT COMPRESSOR FAILURE. AN OVERCHARGE CONDITION WILL ALSO PRODUCE A KNOCKING CONDITION. IF YOU HAVE GUAGES HOOKED UP TO IT YOU SHOULD HAVE APROX 30 PSI ON THE LOW SIDE WHEN RUNNING AND THE HI-SIDE CAN FLUCTUATE FROM 200-250 PSI IF RAD. FAN IS WORKING PROPERLY. YOU SHOULD PROBABY TAKE IT TO HAVE DIAGNOSED OR DISCHARGED BY SOMEONE WITH THE PROPER EQUIP.. YOU AT LEAST NEED TO BRING THE SYSTEM UNDER A 26" VACUUM FOR A MIN. OF 1 HR. TO REMOVE MOISTURE FROM THE SYSTEM WHEN RECHARGING AFTER REPAIR.
Posted on Aug 22, 2008
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Posted on Jan 02, 2017
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