Question about 1994 Cadillac DeVille
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Posted on Jan 02, 2017
Sounds like a bad clutch in the compressor. First you must discharge your AC system with an AC machine that sucks it out. Then you need to remove your drive belt by releasing tension on it by turning your belt tensioner the way it needs to go the slip the belt off the compressor pulley and NOT the entire pulley system just leave the belt on the other pulleys so it's easy to remember how it routs. Then remove your high pressure and low pressure lines that bolt to the compressor and make sure the system is discharged before you do so. Then you will have three or four bolts that hold the compressor to the engine/timing cover. After you get those out it's a wiggle game getting the compressor out of the vehicle. Once all done install new compressor in reverse order of taking it out then once it's all buttoned up you must use an AC machine to vaccume all the air out of the system to ensure proper AC operation then you charge the system to the manufactures specified value which there should be a sticker on your hood or raidiator brace on top if no sticker check the owners manual if still nothing call a Cadillac dealer and ask for the manufactures specified AC system charge weight for your vehicle. Hope this helps buddy
Posted on Jun 30, 2014
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