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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"We praise or find fault, depending on which of the two provides more opportunity for our powers of judgement to shine." -
dunno about much other than take a look at the condensor and see if it's full of crap like stones, leaves & grass.... get the lady to spend a few hours with a toothpick picking the crap out & it'll cool much better.
Other than that are you sure you have a good full charge? -
Yeah - i was thinking about replacing the condensor and drier with larger units on both of our cars."We praise or find fault, depending on which of the two provides more opportunity for our powers of judgement to shine."Comment
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check 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.
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Originally posted by T.Dot_E30 View Post
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."Comment
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The valves are slightly bigger and have a blue plastic cap on the low pressure side and a red plastic cap on the high pressure side.
If both ends have small black caps on them then most likely it is still R12.Comment
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the r134a connections are quick-connects
The old r12s are screw on types, ull see threads.Comment
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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 Post
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."Comment
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clean everything up, maby get a new compressor and head on down to Mexico for some r12.Comment
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The 90 still has r12. I guess I'll top it off with freeze 12?"We praise or find fault, depending on which of the two provides more opportunity for our powers of judgement to shine."Comment
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NO.. Freeze 12 is mostly r134a. Do not mix them.Originally posted by psloan View Post
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.Comment
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I thought I needed like a new compressor and a bunch of other crap to convert it?"We praise or find fault, depending on which of the two provides more opportunity for our powers of judgement to shine."Comment
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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.Comment
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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.Comment
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