Hello everyone. I was tracking down a hissing noise from my car, and I mistakenly thought it was just my lower radiator hose. I had green on the plastic under engine cover, and whenever I grasped and wiggled the hose, the noise would change.
So I replaced the $28(!!!) hose and I noticed that my A/C didn't work after I was done the job. My compressor wouldn't even turn on. I thought that it had something to do with my fan relays as I jumped the relay to power the high speed fans with the car off to cool the car off so I could drain the antifreeze. Well, after hooking up my scanner, the PCM disabled the A/C clutch because of a low pressure situation.
I charged the system, and engaged the compressor, and noticed my high pressure was only about ~90PSI, while the low was near 40.
It turns out that the green fluid was from a UV dye I added quite a while ago in case I ever got an AC leak. The problem was the rubber suction/discharge hose(which connects to the compressor) was rubbing against a plastic bracket which held one of the oil cooler lines to the sub-frame. I'd advise any of your with H-body cars (LeSabre, Bonneville, Olds 8
to check to see that your hoses aren't rubbing.