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SC420

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  • Lexus Model
    1992 SC400

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  1. Got the R12 from my father-in-law. He had a couple bottles laying around that he never used. So how are you supposed to get the freon into the system without the compressor turning to draw in the new freon? The method that I described by manually kicking over the compressor is the way that most cars are refilled, and from what I understand, shops do the exact same thing. I do realize that the switch is there so that you don't run the compressor continuously, but you need to get it to kick over to draw in the freon. Right? That's how anyone that I have talked to who has ever refilled A/C systems has said how it is done and that's the way I've done it in the past. If Lexus cars are different, then they are different. I just want to know the "Lexus method" or what have you. This A/C hasn't ever been touched that I know of as I have had the complete history since it had 44K miles. I will probably take it to a shop to check for leaks and have them add the R12 as I don't really feel great about messing with this car. American cars are easy, but these are a different animal. Parts are too expensive to screw up and I don't want to dump a ton of money into it as because I'm forced into selling it. I still want it fixed right though. I love this car and I will regret getting rid of it, but I need a pickup really bad and I can't have both. :( Thanks for the advice.
  2. As the title states, I am trying to add some R12 to my A/C system in my '92 but I cannot seem to find the low pressure switch to activate the compressor so that it draws in the freon. I found the drier underneath the headlight and usually the switch is close to it on most cars, but I still can't find it. Anyone know the trick to filling up the freon? Thanks in advance.
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