sanstoetter Posted January 2, 2010 Share Posted January 2, 2010 I have a 94' LS400 with about 188,000 miles, and my A/C is giving me some trouble. I bought the car about 2 months ago, and the problem started about 3 weeks in, and up till that point the A/C worked flawlessly. I'm more of an engine/suspension mechanic, never had a car that needed A/c work up to this point (most were performance oriented w/out A/C), and I have no idea how to diagnose the issue. The only thing that I can say for sure is that when I cut it on the light stays constant, and I can for sure feel the compressor kick on. Then ~5-10 sec. later the compressor clutch lets go, and the light blinks. If anyone has any insight on what I should check, or can tell me how to check if I need to just refill the R134. I know that the compressor is a common problem, but I'd rather not replace that if I don't know 100% its the problem considering it'll be at least $500 to replace that. Quote Link to comment Share on other sites More sharing options...
curiousB Posted January 2, 2010 Share Posted January 2, 2010 I have a 94' LS400 with about 188,000 miles, and my A/C is giving me some trouble. I bought the car about 2 months ago, and the problem started about 3 weeks in, and up till that point the A/C worked flawlessly. I'm more of an engine/suspension mechanic, never had a car that needed A/c work up to this point (most were performance oriented w/out A/C), and I have no idea how to diagnose the issue. The only thing that I can say for sure is that when I cut it on the light stays constant, and I can for sure feel the compressor kick on. Then ~5-10 sec. later the compressor clutch lets go, and the light blinks. If anyone has any insight on what I should check, or can tell me how to check if I need to just refill the R134. I know that the compressor is a common problem, but I'd rather not replace that if I don't know 100% its the problem considering it'll be at least $500 to replace that. I seem to recall someone having a problem with low refrigerant a while back and they system cut out due to a pressure safety switch. Maybe all you have is low refrigerant and the system is cutting out to protect the compressor from damage. Quote Link to comment Share on other sites More sharing options...
sanstoetter Posted January 2, 2010 Author Share Posted January 2, 2010 Well I guess I'll just go grab a can of refrigerant with a gauge, and check the low pressure port... if it's not low anything else other than the compressor that it could be? Quote Link to comment Share on other sites More sharing options...
sanstoetter Posted January 2, 2010 Author Share Posted January 2, 2010 Well it looks like I need a compressor... Anyone know of a good reman. unit, or does everyone go oem? I had my girlfriend turn the a/c on while I had the r134 hooked up, but as soon as she turned it on I heard some squeeling/grinding, and started smelling smoke. Quote Link to comment Share on other sites More sharing options...
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