Automotive Air Conditioning Information Forum (Archives)

AceBigalow on Fri August 20, 2010 6:25 AM

Year: 1992
Make: Ford
Model: Mustang GT
Engine Size: 5.0L 302
Refrigerant Type: R134 A
Pressure Low: N/A
Pressure High: N/A
Country of Origin: United States

I tried putting refrigerant in my car I purchased and found out it had a big leak. I bought a can of dye and put it in and found the leak in the high pressure hose from the compressor to the condenser. I had to jump the pressure switch to get the freon and dye to take, but the compressor was accepting freon up to the hole in the line.....

I went to the auto parts store and ordered the new line and the next day (yesterday) I picked it up. I took the old line off and replaced the o-rings and put the new line on. That is all I did. I jump the pressure switch and go to add freon and it will not take the freon. The compressor comes on but I can keep the can on for 10 minutes holding the can upside down and shaking and it will not take a drop. I have verified that the can is punctured and I even tried using a new fill line.

Anybody have an idea why it would take freon one day and I fix the leak and it won't now?

I am not a professional, but I have done enough to know what to do, but I don't have enough knowledge of how the entire system works as to why it won't take.

The only thing I was thinking is that the orfice tube could be stopped up, but after some searching it appears that this car comes with the tube in the line I replaced and so it should be new...

Please help, I live in GA and it is hotter than, well you know LMAO..... Thank you very much for your replies.

iceman2555 on Fri August 20, 2010 9:40 AM

Since there is no mention of an evacuation process for this repair....simply a replacement of parts and a system that has been 'open' to the atmosphere for a unknown time, there is a good possibility of serious contamination...but first thought...is attempting to charge a system that contains a tremendous amount of AIR.....gotta get the AIR out....AIR is a non condensable gas....system will not work with AIR.....ahhhh...it will function....meaning it will pump....just not work properly....
Suggest to obtain the other parts necessary....a new accumulator and orifice tube (probably the entire liquid line). Install these parts and then evacuate the system....and then recharge.
Oh yes, while the system is open....why not completely flush the system and recharge with the correct amount of lubricant.....the lube in the system is probably seriously contaminated due to possible long term exposure to the atmosphere....moisture will ultimately destroy PAGs.

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

Dave in Texas on Fri August 20, 2010 10:17 AM

ACE: follow icemans advice, but before doing so: read/learn about how an MVAC system works. There is a huge amount of information about that and knowledge is power. MVAC isn't a mystery-science. Basic knowledge of the system will save you lots-o-money! Your Mustang was converted to 134 before you bought it?

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At 2, I went home with a 10. At 10 I woke up with a 2 !!