i thinking the click u are hearing is just the compressor cutting on and off that is pretty normal. If its still blowing cold i would not worry about it.

 

it sounds like you didnt have to replace the old one if all it was doing was constantly clicking, but i wasnt there, i dont know. the clicking your hearing is the clutch on the end of the compressor turning on and off. all you need to do is charge it again. when you replaced the compressor you may have created a small leak, which could just be an o ring somewhere, or maybe it already had one thats why you had to replace it to begin with. either way, charge it and it should go away. if the pressure is too high or low it will not work properly. not working when its hot is common for being too low.

 

the clicking is coming from the a/c clutch trying engage itself. I just checked the pressure, it's right at the borderline of being overcharged. I'm guessing as i drive, the pressure is becoming too high?

 

try emptying the system and recharge to the proper level..if that doesnt work then the used compressor is faulty or it was gonna be bad soon

 

If it's a swashplate compressor, the clicking is very possibly the compressor working normally. Most other compressors are pretty quiet. You're probably fine, but i'd keep an eye on it.

If the pressure becomes too high, you'd know it. A relief valve, usually inside the compressor would release the excess pressure all at once, and only once. such a valve destroys itself when it actuates.

 

wouldnt the high side pressure switch have to fail for it to build up enough pressure for the relief valve to release. Just curious

 

Yes.

(god, poke a hole in my catastrophic failure scenario why don't ya? kiddin. )

However this still proves that he's mostly ok on pressure, because his system is still cooling. if pressure was high, the switch would cut the system, resulting in inadequate or no cooling. He asserted it still cools well.

 

haha