It blows kinda cold - but not cold enough. It's fully charged - just not spectacular enough to overcome tx heat. What upgrades can i do to cool it down? Also, how can i tell if it is 134a of r12?
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How can I improve my ac?
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Originally posted by T.Dot_E30 View Postcheck the fittings to see if it has been converted to r134a
Does it blow colder while the car is moving? A better aux fan in front may help cool the condenser down better.
What do 134a fittings look like? These are my first bmws with working ac...lol"We praise or find fault, depending on which of the two provides more opportunity for our powers of judgement to shine."
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Insulate your freon lines by covering them in the foam sleeves they use for household plumbing. Sleeves that are relective are even better. Believe it or not this will make a big difference. Your compressor might also be the problem, they will get warn and won't pump freon fast enough. If your car has high milage and has lived its whole life in texas you might want to track down a compressor that is from up north. Also if your car somehow still has R12 freon in it, which I doubt it does, keep it. I believe R12 is more effective then R134a. The reason we don't use it is it has CFCs in it that kill eagles or kittens or something.
Stu
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Originally posted by 02stu View PostInsulate your freon lines by covering them in the foam sleeves they use for household plumbing. Sleeves that are relective are even better. Believe it or not this will make a big difference. Your compressor might also be the problem, they will get warn and won't pump freon fast enough. If your car has high milage and has lived its whole life in texas you might want to track down a compressor that is from up north. Also if your car somehow still has R12 freon in it, which I doubt it does, keep it. I believe R12 is more effective then R134a. The reason we don't use it is it has CFCs in it that kill eagles or kittens or something.
Stu
I'm pretty sure CFCs deplete the ozone layer 8-)
I'll have a look at it and try insulating the lines first."We praise or find fault, depending on which of the two provides more opportunity for our powers of judgement to shine."
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Originally posted by psloan View PostThe 90 still has r12. I guess I'll top it off with freeze 12?
It's so simple to swap over to r134a or r152a that you are better off doing it the right way so you're A/C will work better for a much longer period of time.
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trent
No, you don't. Just fittings.
If it has R134A, I would go back to R12. R12 was pretty efficent. I would rewire your AUX fan to come on to "high" when you turn your A/C on, or, just install a huge new aux fan.
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It should blow cold without upgrades. You have a problem with your A/C system. My guess is you have too much oil circulating in the system and thats taking away from the amout of freon. The only way to fix that is to drain the whole system, clean out all the lines and then replace the oil with the correct amount. Just cause the system is charged dosent mean its working correctly. You may also have a small leak that has slowly let out freon after you charged it. Also make sure your pump can get the pressure high enough for the system to work to spec.
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