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Update:

1. Neither of my fans turn on when I turn on the AC. One is supposed to go start as I understand, right? So, I need to trouble shoot this. Would a fan not turn on if the refrigerant was too low? Is this another indicator that I may have a large leak and system is on E?

2. I have a can of refrigerant with a pressure test: kit from Walmart. I assume that the filler is the nipple on the cross frame, under the hood, left of center, front?

I think that next I need to find out why the fan is not turning on, and if that should be addressed before filling system, or if the fan issue is a symptom of not enough pressure in the system.
 

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that's typically the thing i will put some money to a specialist of ACC first for the good doing job with dedicated machines second for avoiding to pollute the air finally it's forbidden in my country.:nono;
 

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You might be right. I had to change my Monday appt. to Wed, as something came up to help a friend..

I also played about with the controls and I can hear nothing that sounds like compressor turnomg on, nor was there a decrease in RPM. I also do not see the 3 bolts that are not seen if the compressor is working, even when the car is off. But, maybe the three bolts are not a feature on my compressor.

Will a tech 2 help me determine the exact issue? I found a place about 30 miles away called "Engineering by Justine" and he works on European cars and has a tech 2. I will set an appointment with him, but I want to figure out what I would all like him to do.

It really may be best just to let this go until my appt. on Wednesday....
 

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Since your fan did not go on and you can not hear or feel the compressor engage you are very likely low on refrigerant. This happened because the system has a leak- either large or small. If small, adding a can of refrigerant will perhaps raise the pressure to where the system will start working again- that is if there is still some freon in the system.

Going to a Saab shop here seems unnecessary. A good AC specialist is likely a better place to spend your money. If it was me, I'd put the can you have in and see what happens-and look and listen for leaks. But the "correct" thing to do would be to get it looked at by a competent AC repair person.
 

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Okay.. going to do that. That is the correct nipple to place the Freon connector on, correct. Upper front engine compartment on the cross bar, a little to the drivers side, front?
 

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On 2002 and later models the low pressure port- the one you want- is located just in front the of the power steering reservoir. Be careful, there are two valves located there, one with a green cover, and one with a black cover. You want the the black one. (Your hose actually won't connect up to any other port and likely the Walmart hose will also be too short to keep the can vertical and moving side to side but do what you can.)

The high pressure pressure valve is located behind the radiator grill,-don't mess with it- but check if the schrader valve is leaking if you get back to a working system- it's a common place for a slow discharge.

Again- this will not be a true fix but might get you a data point toward that goal. Good luck
 

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Thank you... I was just about ready to ask about those two other valves on the px side, I saw more clearly tonight. I will definitely read through this again before I do anything....
 

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Okay.. going to tackle this right now using a/c pro. It seems really easy to use. Here is a link for instructions:

Will report back on the results.......
 

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So here I am:

I followed all the instructions on the Freon bottle

It had no pressure at the beginning and quickly jumped to 20. Then 30. But it would not get above 34 early. It seemed like the more I held the trigger the harder the pressure struggled to stay at that 34 mark, and an hour plus later, after I emptied it, I was sitting strong at 28-30lbs.

I could feel cold air, but it should be much colder. By the time I emptied the can, I could hardly feel any cold air....But it was definitely there...

I have three scenarios....

1) The leak started at around 34lbs, (2) the pressure inside the can was at equilibrium and a half empty canister could not finish the job. Perhaps a second can could get it the last 15 lbs. I need?, or (3) even with a new can, it will not get any higher pressure than this and that is all the can is designed to give. Need to go to professional to get more pressure?

Well, that is where I am at.. it appears a little promising, yes?

Oh yes, and after having the car running for an hour or so as I filled the Freon. I restarted it and saw that both my fans kicked on, almost simultaneously, a few seconds after the re-start. Need to check again if fan that goes on start of engine when a/c on high, is now working. I also think the compressor is running because I heard something within 30 sec.s of beginning the fill. Could have easily been the compressor. Also, the center bolt is spinning on that compressor belt wheel. Both the high one and the low pull center bolts are spinning, but think that the low one is for the compressor. I could not hear any leak sounds, and that metal tube (bottom rear engine with ends facing wheels, and covered with an aluminum foil like tube crimped on each side If this is a/c, then that out aluminum foil cover of the smaller tube was super hot.

Pressure gauge re-installed and after writing this pressure was still at 28-30,31

Maybe in the morning I will see more signs of a leak or not.
 

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So here I am:

I followed all the instructions on the Freon bottle

It had no pressure at the beginning and quickly jumped to 20. Then 30. But it would not get above 34 early. It seemed like the more I held the trigger the harder the pressure struggled to stay at that 34 mark, and an hour plus later, after I emptied it, I was sitting strong at 28-30lbs.

I could feel cold air, but it should be much colder. By the time I emptied the can, I could hardly feel any cold air....But it was definitely there...

I have three scenarios....

1) The leak started at around 34lbs, (2) the pressure inside the can was at equilibrium and a half empty canister could not finish the job. Perhaps a second can could get it the last 15 lbs. I need?, or (3) even with a new can, it will not get any higher pressure than this and that is all the can is designed to give. Need to go to professional to get more pressure?

Well, that is where I am at.. it appears a little promising, yes?

Oh yes, and after having the car running for an hour or so as I filled the Freon. I restarted it and saw that both my fans kicked on, almost simultaneously, a few seconds after the re-start. Need to check again if fan that goes on start of engine when a/c on high, is now working. I also think the compressor is running because I heard something within 30 sec.s of beginning the fill. Could have easily been the compressor. Also, the center bolt is spinning on that compressor belt wheel. Both the high one and the low pull center bolts are spinning, but think that the low one is for the compressor. I could not hear any leak sounds, and that metal tube (bottom rear engine with ends facing wheels, and covered with an aluminum foil like tube crimped on each side If this is a/c, then that out aluminum foil cover of the smaller tube was super hot.

Pressure gauge re-installed and after writing this pressure was still at 28-30,31

Maybe in the morning I will see more signs of a leak or not.
What in incredible waste of time, freon, ozone layer, gas running the car at idle for an hour REALLY?

Why are you doing this?
.
 

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And just few more hours and all guessing starts again from beginning...;oops:
 

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After enjoying a nice morning, I went to chk the pressure still left in the A/C system, after adding 20 oz. to it yesterday. Not surprisingly, it maintained none of its pressure, which I kind of concluded after pressure would not go above that 34 range while filling.

Next.. locating/fixing the leak....tomorrow. ;ol;

I looks like at first glance, I could get all the equipment it looks like that is needed to start an A/C business for about $1500. Not bad for a start-up cost. Though there may be other things involved as well...

I did it because I wanted to, Bob. Because I am here to learn about my car... and I am also not an environmental martyr... meaning I do not feel guilty about the very few times that I deem it necessary to selfishly put making sure that my life is first taken care of, so I can continue to add exponential benefits in the lives of others who I am blessed to spend time with on my journey.
 

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I did it because I wanted to, Bob. Because I am here to learn about my car... and I am also not an environmental martyr... meaning I do not feel guilty about the very few times that I deem it necessary to selfishly put making sure that my life is first taken care of, so I can continue to add exponential benefits in the lives of others who I am blessed to spend time with on my journey.
And more power to you but you should be aware that messing with the pressures in an ad hoc manner can end up destroying the compressor, expansion valve, lots of seals also you can introduce contaminants.

Basically what you are doing can take a two hundred dollar repair into hundreds in not over a thousand dollars.

Price a compressor re and re or price the job of replacing your expansion valve, a job you do not want to undertake yourself.

I'm not trying to insult its just that you ask for advice and direction and well...
.
 

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You do know that this is a variable compressor? the low side will vary all over the map because the compressor has variable output.

You can make a mess of things with your approach.

You may have air in the system as well.

Fixing the leak can be a tough job. Even with a sniffer or dye you have to know what you are doing.

People gave you lots of advice.....did you read it?
 

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Thank you. Your input and the input of others is not lost on me (though sometimes it does lose me until I fill in the blanks). I should have updated info on this issue shortly.... ;)
 

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by the way I have 2 Aeros with A/C problems that are stumping me now.....that ACC computer can be demanding!!

I DO NOT KNOW ALL THE ANSWERS and I am learning too.
 

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Glad to hear it!

Well, I am going to ask for my money back on my bottle of Freon as it should have filled the system and it did not. I had a pressure test done today and there were no leaks found, but if they are really small, they might not show up. My system is now filled w\ Freon and some die. So, we shall see what happens. Will it hold or is there a tiny leak...

Regardless, as it appears the system is not compromised, there is no reason that the refrigerant I put in should not have worked. Maybe I got a defective can. I will update with anything new, and certainly any leaks that show up and how to get them fixed...... It sure is nice to have cold air with that black leather interior.... :cheesy:
 

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Glad to hear it!

Well, I am going to ask for my money back on my bottle of Freon as it should have filled the system and it did not. I had a pressure test done today and there were no leaks found, but if they are really small, they might not show up. My system is now filled w\ Freon and some die. So, we shall see what happens. Will it hold or is there a tiny leak...

Regardless, as it appears the system is not compromised, there is no reason that the refrigerant I put in should not have worked. Maybe I got a defective can. I will update with anything new, and certainly any leaks that show up and how to get them fixed...... It sure is nice to have cold air with that black leather interior.... :cheesy:
Good luck getting your money back. You really need to see an AC professional or somebody who knows what they are doing on automobile AC systems. Putting your money into random AC products available at the auto store is foolish. You really need to get a professional to look at your AC system since you know squat about it. Your results have caused you to comment about things you have no real experience about.
 

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You really need to get a professional to look at your AC system since you know squat about it. Your results have caused you to comment about things you have no real experience about.
He did have it checked by a professional after experimenting with a DIY can.
.
 

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Glad to hear it!

Well, I am going to ask for my money back on my bottle of Freon as it should have filled the system and it did not. I had a pressure test done today and there were no leaks found, but if they are really small, they might not show up. My system is now filled w\ Freon and some die. So, we shall see what happens. Will it hold or is there a tiny leak...

Regardless, as it appears the system is not compromised, there is no reason that the refrigerant I put in should not have worked. Maybe I got a defective can. I will update with anything new, and certainly any leaks that show up and how to get them fixed...... It sure is nice to have cold air with that black leather interior.... :cheesy:
How can you ask for your money back?

That can in the photo looks like it holds 16 or so ounces. The system takes 29 ounces.

"I put 16 oz. in my car. The system takes 29 oz. It did not work. I want my money back!!"

The can will feel very light once it is empty. This is why the pros do it by weight. They actually have a precise scale for the R134a tank [NOT FREON] and they watch the amount by weight that goes into the system. They stop at 29 oz for a Saab 9-5.
 
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