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#1
04-28-2005, 12:04 AM
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Is my A/C overcharged or undercharged?
Hello,
car: 93 Mazda MPV I was seeing lots of bubbles in the sight glass last year, so I added a 12 oz can of R-12. I still saw more bubbles so, I added another can. It worked along just fine. Recently I've noticed short cycling compressor on ocassion as well as cut outs when its warm outside. A/C blows ice cold air, but in warm/hot weather, it would cut out suddenly and will not come back on for a while. Did I overcharge the system or did it lose charge over one year and became undercharged? 
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#2
04-28-2005, 01:08 AM
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i'm no big expert on ac's, but i don't think that you can really overcharge those systems very easy...
chances are that you lost the charge from a faulty system..... then again, in '93 they may have started to use r134a (i don't think they did though). Make sure you didn't put r12 in a r134a system by accident (if it's possible... but hey it happens).
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Tyler L Thank god winter is over.... time to hit the track!!! Why do some people hate me? I'm not bias... I just hate rice... (Except chicken fried rice that is....yum yum)
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#3
05-03-2005, 01:51 PM
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Re: Is my A/C overcharged or undercharged?
if it has a slight glass chances are its a R12 system
the slight glass should not be used as a level inducatior. chances are you are overcharged. take it to techniction with a EPA 609 certifition for the proper charge.
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#4
05-04-2005, 08:14 AM
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Re: Is my A/C overcharged or undercharged?
Chances are you put the right stuff in if the fittings fit--they use different fittings so people don't mix them. You can buy a cheap pressure gage-- looks like a tire pressure one-- that will tell you the pressure. If you had a leak that required more charge, chances are that you still have that leak...
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