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Originally Posted by carnut00 Do the cans of stuff you buy at Autozone really work? Has anybody had any luck with them? |
Yes assuming all that is wrong with your system is that it is a little low on refrigerant. Too many people get carried away and reason that if a little is good more is better. This can be a real problem as compressor pressure can build dramatically and can be very dangerous. Follow the directions carefully, if the charge you put in doesn't make a noticeable difference take it to someone who fully understands the system. Leaks are common and systems that are completely empty will rapidly loose anything you just put in, don't keep feeding it. If you don't notice a change in air temperature output at the vents stop. This is one of those maintenance items that if you aren't completely comfortable with it leave it to a professional. I've been on the professional side of it. I've seen systems destroyed because the backyard mechanic took it too far. Having a pro charge your system may seem expensive however they usually do a host of checks along with adding the refrigerant. These checks will often tell you if you have additional problems. A major repair on a system can run hundreds and on occasions thousands of dollars.
Here's a side note. I used to turn wrenches and one of the part time mechanics in our shop was a college football player. He had no business working on an A/C system. He decided however that it wasn't a problem. We used to charge systems out of 20 lb. containers (they resemble a propane tank) he hooked the hose up to the wrong side of the system while holding the container opened the valve. High side line pressures can reach and exceed 400 lbs. per square inch, the tank blew and split his thigh to the bone. It ruined the last two years of college ball for him.
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