BostonETC97 Posted November 8, 2006 Report Share Posted November 8, 2006 For the past few weeks, the a/c compressor has been making some odd noises upon startup, as it would 'sieze up' when it cycled for the first time after a cold start, causing the belt to slip over it. Once it spun a few times with a little protest, it would be silent and operate normally. A/C would be cool, but not as cold as in the past. I have no idea what made me try this (live and learn...), but I added some more refrigerant last night. Sure enough, when the compressor kicked on today, it completely stopped turning, the belt made some screaming noises from hell, and stalled the engine. I disconnected the sensors to disable the compressor, and she now starts/runs without the compressor cycling. Here is my question (which I should have asked before trying to fix this on my own!). I now know for sure my a/c is severely overcharged with both refrigerant AND oil. Would this cause the one year old compressor to seize? I made an appointment to have the entire system flushed and properly charged tomorrow. Will I be looking at replacing the compressor as well, or will it survive as long as the bearings are intact? For now on I'm not playing with this stuff! -Scott Link to comment Share on other sites More sharing options...
Ranger Posted November 8, 2006 Report Share Posted November 8, 2006 What type of compressor did you install? Delco, 4 seasons? New or rebuilt? Why was the first one replaced? If it grenaded internally was the system flushed? I'll defer your actual question to Kevin. Link to comment Share on other sites More sharing options...
BostonETC97 Posted November 8, 2006 Author Report Share Posted November 8, 2006 It's a new ac delco in there. I'm guessing my overcharging caused it to seize, but that's only my guess. I'm hoping a full flush and proper recharge will fix it, but I'm wondering if I'm being too hopeful.... Link to comment Share on other sites More sharing options...
Cadillac Jim Posted November 8, 2006 Report Share Posted November 8, 2006 It does sound more like overcharging than a belt problem. Codes? -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
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