Quote:
Originally Posted by cris2004
Thanks for the reply.
The system had been working great for several years. It was after sitting a month now that the AC wasn't cooling well.
Years back I did add too much oil, had poor cooling, and corrected it by removing a few ozs after checking my math.
This time, I added 4 pounds of freon, 2 oz oil to the new compressor
and 4 to the drier in spite of there being so little in the old components. I vaac it down for a couple hours to-24hg or whatever and held it shut down for fifteen minutes.
Idle is 45/175, 2000rpm is better today, 32/225! Yesterday there wasn't a significant drop at high RPMs. Now, I may be 2 oz low on oil after yestersdays actions.
My fear was that the oil was pooling again somehow, but that's just a bit a desperation guessing.
It cooled worse after the new stuff, the compressor is quite. There is a big difference in running the front only, and with the rear, but neither was actually working well.
Today, it is better, The car has been sitting but today I'll take it to work and try the AC, it's only the high 90s thank goodness.
If the TXV was stuck open, wouldnt I get liquid to the compressor causing the high 'low' pressure reading? (as I am)
If it's closed, that would seem less disruptive. Could it be passing just enough the make the expansion hose cold but not actually cool the evaporater?
thanks again
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Total oil charge should be 11 oz. pag 150.
You are at a hit and miss on oil charge>
Did the replacement compressor have oil in it.
I have got some with a heavy charge10 oz or un know oil.
32/225 at 2K is good pressure and ac should be working good.
Does it hold at 32 low or cycle up and down with compressor and engine running?