cohophysh Posted April 3, 2010 Share Posted April 3, 2010 So I replaced the broken AC compressor in my 90 legacy and filled it with the correct refrigerant but it still blows hot air....where do I look from here? Could there be a clog in the line? Is there a vent that is not opening, if so, where do I look? Thanks Link to comment Share on other sites More sharing options...
Platinum_Racing Posted April 3, 2010 Share Posted April 3, 2010 Start by checking the clutch, then check for leaks in the lines. A leak in the line will be hard to detect. The easiest way to check would be to fill the system again after you filled it the first time and see if it takes more refrigerant. When you say that you filled it with the proper refrigerant, what exactly did you use? If you used R134-A (The common refrigerant found at most auto parts stores and modern vehicles) then the cooling system will not be as cold or work as efficiently as with the original gas used in 1990, which is no longer made. Link to comment Share on other sites More sharing options...
Yamarocket630 Posted April 3, 2010 Share Posted April 3, 2010 To properly diagnose the system you need to check the high and low side pressures while the system is running. Link to comment Share on other sites More sharing options...
Legacy Wagon Posted April 5, 2010 Share Posted April 5, 2010 If it has a leak there is refrigerant that you can buy that is black light reactive, but I wouldn't use a bunch since I've heard of it clogging systems before, but it will show you exactly where the leak is if that's the problem. And yeah, R12's gonna be hard to find since they're not legally allowed to sell it to people who dont have a certification for it, but it can be done. Not sure if you got it switched over or not. Link to comment Share on other sites More sharing options...
Yamarocket630 Posted April 5, 2010 Share Posted April 5, 2010 Anyone can buy R12 without a license. In 30lb cylinders lol. Link to comment Share on other sites More sharing options...
Legacy Wagon Posted April 6, 2010 Share Posted April 6, 2010 LOL! Yeah, and you can empty your bank account a few hundred as well Link to comment Share on other sites More sharing options...
Yamarocket630 Posted April 7, 2010 Share Posted April 7, 2010 They have actually come down in line with R134 since there is so little demand now. Link to comment Share on other sites More sharing options...
trevorno Posted June 12, 2010 Share Posted June 12, 2010 On a related issue, how do I tell if my 93 legacy has been converted to use R134A vs R12? Link to comment Share on other sites More sharing options...
burnout8488 Posted June 13, 2010 Share Posted June 13, 2010 There should be a sticker in the engine compartment, and conversion valves on the high and low side pressure lines. Link to comment Share on other sites More sharing options...
Legacy Wagon Posted June 14, 2010 Share Posted June 14, 2010 Also you can pick up a retrofit kit for like $40 and rent a compressor from Autozone. Convert it all over yourself. Link to comment Share on other sites More sharing options...
SiRiS Posted June 15, 2010 Share Posted June 15, 2010 howed you recharge it? if you just used a kit from autozone, it's already converted. otherwise you would not have been able to recharge it. Link to comment Share on other sites More sharing options...
Legacy Wagon Posted June 15, 2010 Share Posted June 15, 2010 Yeah, but if it's supposed to be R12 it would make sense if he put 134 in it and it's not cooling adequately. Link to comment Share on other sites More sharing options...
trevorno Posted June 15, 2010 Share Posted June 15, 2010 It looks like I'm still on R12. I recharged the AC in our 96 Honda myself with a can from Walmart. I checked the fittings on the Legacy but they're different, so I'm assuming it's never been converted. Looks like I'll have to have a shop do it. Link to comment Share on other sites More sharing options...
Legacy Wagon Posted June 15, 2010 Share Posted June 15, 2010 Nah, you can change the fittings and stuff yourself with a retrofit kit from Autozone for like $40. Comes with freon and the fittings. Buy a set of high and low gauges from Harbor Freight for another $40 and rent the vacuum pump for free from Autozone. You'll save yourself at least a couple hundred bucks if you do it yourself. Link to comment Share on other sites More sharing options...
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