Taurus 02' A/C


#1

Hello friends. Please help me. My A/C does not work on my Taurus. It never has since I bought the car about 7 months ago. A few days ago I attempted to add freon. I started adding it with the A/C on at max. As I started adding A/C my compressor kicked on and started making an ominous noise; the sound was of air hissing for about 2.5 - 3 seconds punctuated by a click. So it would go something like this: airrrrrrrrrrr CLICK airrrrrrrrrr CLICK airrrrrrrr CLICK etc… My A/C starting to cool EVERSO slightly; almost imperceptible. Any ideas?

P.S. It was advertised as having COLD A/C but I could not very well test it as I bought it in the dead of winter.


#2

Sounds as if it tried to start working once you got past the low pressure setting and the clutch was pulling in. You must have a leak if you hear the hissing sound.


#3

Sometimes a compressor can make what is perceived to be a hissing noise when the clutch is kicking in and out.
I cannot tell you with any accuracy what it will take to sort the A/C out as there is too much missing info. System pressures are not known, whether or not the system is empty, etc, etc.
It can be normal for a compressor to cycle on and off rapidly when first charging on an empty or nearly empty system.

I can tell you that if the system is completely empty of refrigerant then recharging is a waste of time as the refrigerant will all leak right back out. An empty system with a major leak also means the presence of moisture in the system which will contaminate the accumulator and cause other problems.


#4

Is there any other information I could give that might lead to a solution? What would my next step be? Should I try to add more freon now?


#5

What needs to be known as a first step is the static pressure in the system. This means with engine and A/C off and a full manifold gauge set connected to both high and low sides. I hesitate to recommend adding anything at this point.

Static pressures vary based on a number of things but most of them I’ve dealt with were usually in the 115-125 PSI range. When running of course, the low side should drop into the roughly 35 PSI range and the high side rise into the 225-250 range.

Those kind of pressures usually means the A/C should cool unless there are other issues not related to the refrigerant level.

A/C work involving refrigerant can be dangerous and I would strongly advise you to wear gloves and safety goggles if you want to DIY. A botched A/C repair can be worked around; permanent injury including blindness cannot.