Bucata206 Posted July 3, 2015 Share Posted July 3, 2015 Hey guys, got a quick question about my AC system on my 2010 Legacy. Today I bought some freon to recharge the AC because it's not blowing cold air as it should. While recharging the system, it was doing well and the freon was on the low side. I started to fill it again when the AC fans clicked off. When they turned off, the pressure needle shot to above the acceptable range (without my pulling the trigger.) When the fans would click on for all of 1 second, the needle would start to go back to where it was, but before it would even get back to a realistic reading, the fans would disengage. This would continue until I finally just gave up. After that I got into the car to run to home depot and I found that the AC would not blow any cold air what so ever. Thoughts on what could have happened? Sent from my SM-G900V using Tapatalk Link to comment Share on other sites More sharing options...
1stick3pedals Posted July 6, 2015 Share Posted July 6, 2015 Did you have the blower on max with the temperature targeting as low as it can? You mention fans, but does your pressure change have any correlation to the A/C compressor clutch engaging or disengaging? Link to comment Share on other sites More sharing options...
FJuan Posted July 6, 2015 Share Posted July 6, 2015 ^^ This Also, if the fan is cycling on/off or the clutch on the compressor cycling on/off, it's telling you that the system doesn't have enough pressure. It could be very low on freon, faulty compressor or you have a leak in the system. Follow the instructions on the back of the can to the "T", if that doesn't help, then you have another problem in the system. My wife's balls are delicious. Link to comment Share on other sites More sharing options...
starionesir Posted July 7, 2015 Share Posted July 7, 2015 Are you charging with a manifold or with the cheap fix yourself can's at the local autoparts store? You really need a high and low pressure manifold to properly charge the ac to make sure everything is working properly. A properly working ac system will never need to be recharged as its a closed system. If you have to add refrigerant then there is a leak that needs to be found. The system has a high and low pressure switch that will stop the ac compressor clutch. Sounds like the system went off on overpressure. From the info you have supplied. The compressor and fans cycling will be normal on once the temp inside the car has come to the temp you have selected. Now if its a 90+ degree day then the clutch and fan may never shut off. Link to comment Share on other sites More sharing options...
Bucata206 Posted July 8, 2015 Author Share Posted July 8, 2015 I was just using the can from o'reileys. The blower was on max and the temprature was turned all the way down with the AC button activated. I have an appointment with Subaru to check it on Friday. Link to comment Share on other sites More sharing options...
Andy_Mac Posted July 8, 2015 Share Posted July 8, 2015 Not having a go at the OP, just the process in general. As an A/C tech I can safely say DIY refrigerant cans are an absolute joke. Without knowledge and correct tools most people won't bother getting its the biggest hit and miss around. Let alone fully understanding what the likes of gauges are really telling them. If its leaked enough for it to not be working then the problem should be found before refilling not after it happens again. The likelihood is pretty slim with these kits but liquid refrigerant burns are no laughing matter either. Sure its a super small amount of refrigerant in cars but why should people with no idea on the environmental impact be allowed to charge systems with leaks only for it to leak again. In most countries as an industry tech if we get caught using practices like that we have the potential for 10s of thousands of dollars in fines and yet people able to plead ignorant can be buying new cans endlessly to keep topping up leaking systems 2000 Legacy B4 RSK - SOLD 2006 Legacy BP5 GT Spec B wagon - Garage Thread 2011 VW T5 van 2.0L of turbo diesel awesomeness Link to comment Share on other sites More sharing options...
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