I HIGHLY doubt that is the case.It turns out my system has been overcharged for years. I found out by trying one of those A/C Pro cans from Walmart. The gauge started in the red and stayed there but now my compressor wouldn't kick on at all. I bled off enough refrigerant to get the gauge needle to the top of the green and now my air is running at idle. I could swear the car has been like this since I bought it. It only took me 70, 000 miles to figure it out. The whole time I thought this is how Honda configured it from the factory.
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Connecting one of these is the BEST way to ruin a perfectly good AC system and cost you $1500 to get it fixed. First, you have no idea what the high side is doing. Second, just because the pressure on the low side which is where these cans connect (if the compressor is even running) can be higher than normal and it does NOT mean the system is overcharged. It could mean it's low on refrigerant, bad compressor, or a number of other things.Did you connect one of these to your car?
1) Read the instructions.So, please tell how exactly you would do this? How much would you put back in and how would you know?
No, you're just lucky. Any other issues in the system (bad expansion valve or orifice tube, weak compressor, etc.,) and you can easily have an overcharged system because the pressures will not be correct with the correct amount of refrigerant. It's one thing to put in a few ounces into a system you know is low and see if it improves cooling. If it does, then you know that a proper charge may likely fix it. If there are other problems in the system you are gambling with the compressor.1) Read the instructions.
2) Follow the instructions.
3) To determine how much you need to add, you must know both the pressure, and the temperature. With a handy chart, one can determine what the pressure should be (for a given temp), and you can add refrigerant until you get it into the right ballpark - while a lot of people want to overcomplicate it, it's really a rather simple system, and quite forgiving - of anything other than stupid.
I am NOT a professional automotive technician, but I've serviced my personal vehicles' a/c half a dozen times over the years. I've replaced condensers, compressors, driers, and hoses. On one car I cobbled together an a/c system from several donor vehicles (because it was an option on 4th gen Civics, and NOT an option on the Si (unless you had a rex Si)), and installed it on a vehicle not originally equipped with a/c. And yes, at the end of every job, the a/c worked great. In fact, I've still got a car whose a/c I successfully repaired 8+ yrs ago (it had a leaking high pressure hose) and it's still working great. I managed all that by not being stupid, and by following the instructions (where applicable).
meh. It's not rocket science.