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a/c compressor knocking sound??

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Old Jul 17, 2010 | 07:06 PM
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From: East Texas
Default a/c compressor knocking sound??

my a/c compressor started making a knocking sound only when you turn it on! you can feel it in the car! I removed the freon and pulled a good vacuum and recharged it with 26oz of 134a and it still is making the bad sound but it cools good any clue? help please! (I'm just a house A/C man not cars)
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Old Jul 17, 2010 | 07:42 PM
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Did you add the proper amount of oil back in with the freon? after all you sucked all the oil out of the system and the compressor.?
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Old Jul 17, 2010 | 10:00 PM
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Originally Posted by Evil-Twin
Did you add the proper amount of oil back in with the freon? after all you sucked all the oil out of the system and the compressor.?
you think pulling a vacuume sucked all the oil out
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Old Jul 18, 2010 | 12:12 AM
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Default i fixed it!!!!!!!!

i found my noise it was the auto transmission line rubbing the front of the compressor :o almost cut through it glade i found it sounds quiet now! thanks for all the help
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