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Old 06-25-2010, 10:10 AM
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AC

Alright boys and girls I finally took the time to fix my climate control and boy i wish I had done this alot sooner. Everything works now. YAY!!!!! Anyways nback to the main point. What type of freon does our cars take I want to recharge my ac system with one of these Air Conditioning Refrigerant | Canadian Tire

I just don't know what type it is?

Thanks
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Old 06-25-2010, 11:51 AM
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Re: AC

It should be R12 if I remember correctly.
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Old 06-25-2010, 12:08 PM
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Re: AC

unless it's a '94+ (and maybe '93 also?), they use R-134a. it should tell you what kind to use on one of the stickers underneath the hood iirc.

i wouldn't attempt to do this yourself unless you're really sure what you're doing.
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Old 06-25-2010, 05:39 PM
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Re: AC

MEh, screw it, rip it out and get a 38" belt. You don't need Ac... :D
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Old 06-25-2010, 06:08 PM
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Re: AC

It should say...plus R-12 and R-134a use two different hoses and fittings. And they use two different types of oil. And they have two different types of service ports.

Look at your service ports. There are two. They are fittings on the A/C tubing that lets you hook into them, like if you were to charge them. If they have air hose quick connect style fittings, its R-134a. If they are threaded, its R-12. And if you push on the pin inside the port to release just a fuzz of refrigerant, some oil should come out. If the oil is green, its R-134a. If its clear or brown or something, its R-12. Also R-12 uses gnarly barb style crimp fittings, R-134a uses a different type of hose fitting.


There are a lot of ways you can tell just by looking at it bro.
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Old 06-25-2010, 09:12 PM
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Re: AC

Sweet I will check that out because i just fixed my climate control problem with the connections coming loose and now it works great i just need to recharge my ac.

Would the compressor come on if there was no freon on it? by the way its a 93 srv h22a
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Old 06-25-2010, 09:24 PM
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Re: AC

if the freon is too low, the compressor will not come on. low pressure switch engagement will prevent operation.
also, just because the compressor comes on, doesn't mean the charge is optimal.
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Old 06-25-2010, 09:25 PM
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Re: AC

It's got a switch built in that keeps the compressor from coming on if the pressure is below 10-15. Nominal pressure is 35-45. Anyway, 92/93 will be R12. If it's been converted, there should be a sticker somewhere that reflects such, and the fittings will be different
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Old 06-25-2010, 10:23 PM
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Re: AC

Ok that makes sense because the compressor has not been coming on still even though i fixed my climate control so I figured there must be some safety thing telling the compressor not to turn on untill it gets freon in the lines.
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Old 06-25-2010, 11:02 PM
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Re: AC

Yup. And it needs to be charged optimally. Your a/c and refrigerant/oil (or "freon") is like your engine and motor oil, too low and it won't work, too high and it'll run like sht.

I wouldn't try doing it yourself unless you know what you're doing.

Basically....and you prolly shouldn't even try this because if you get it wrong you could end up blowing off your hand....you have the refrigerant tank sitting the right way up, plug it into the high side with the car off and a/c off, and try to get in as much as possible. Once you've gotten as much as you can in, then you plug into the low side, flip the tank over, turn on the car and a/c and it'll suck the rest in. However, its a tiny bit more complicated than that, so I wouldn't do it by yourself unless you know what you're doing. Because say if you're charging the high side and you turn the car on, the pressure from the system will cause the refrigerant which is under pressure to shoot into the can your filling from, and if it doesn't have a safety pressure relief valve, as many of the pound cans don't, then it will likely explode. In HVAC class we called them hand grenades. Anyway, thats worst case scenario. You could just end up not doing it right and it either still won't run or your compressor will burn up from insufficient oil or run like crap from too much oil, or too much refrigerant, etc. Without a set of manifold gauges and a bit more working knowledge, I wouldn't even attempt it.


But hey, I'm not your mommy, so if your going to do it then knock yourself out. Just do some research first. Actually do a lot of research.
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Old 06-25-2010, 11:08 PM
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Re: AC

Its not that bad if you get a good DIY kit with the safety valve and gauge. But yes, it is much easier with an evac machine, and some shops charge an arm an a leg for it.
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Old 06-25-2010, 11:16 PM
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Re: AC

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Its not that bad if you get a good DIY kit with the safety valve and gauge. But yes, it is much easier with an evac machine, and some shops charge an arm an a leg for it.
Thats why a/c work is cake. The machine does it all and you sit there and smoke a cigarette, and get paid. And it would prolly be easier to use manifold gauges than a DIY kit, however I don't know what comes in the kit, so I may be wrong. You can use pound cans with manifold gauges too. Just gotta know how everything works. In hvac they made us recover, evac and charge with both manifold gauge set/charge tank/recover machine & tank/vacuum pump AND they made us use the a/c machines. A/C machines are sooooo much easier. Hit a button and wait lol.
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Old 06-25-2010, 11:25 PM
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Re: AC

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Originally Posted by havikprelude View Post
Thats why a/c work is cake. The machine does it all and you sit there and smoke a cigarette, and get paid. And it would prolly be easier to use manifold gauges than a DIY kit, however I don't know what comes in the kit, so I may be wrong. You can use pound cans with manifold gauges too. Just gotta know how everything works. In hvac they made us recover, evac and charge with both manifold gauge set/charge tank/recover machine & tank/vacuum pump AND they made us use the a/c machines. A/C machines are sooooo much easier. Hit a button and wait lol.
Yeah in my class we did it both ways, the machine and the DIY. Kinda nice that we did it that way so i have first hand experience when people come into work and want to get a DIY kit.
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Old 06-26-2010, 01:23 AM
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Re: AC

I don't mess with my A/C outta school, having my macs cert means if i accidentally do something stupid i get mad fines for it....

if it was someone without the cert it'd be a slap on the wrist, but since ive got it i'm "supposed to know better" so its a couple grand in fines if I **** up.
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Old 06-27-2010, 12:27 PM
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Re: AC

Oh i am definatly going to do the researcxh on how it gets done. Because I personally wouldn't want to screw stuff up. So thanks for the advice.
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