98 Blazer Idle issue's

This Blazer I have is nothing but problems lately. It has a wierd lope at idel which I think may be a bad or sticky poppet. The tranny is toast also I need a complete rebuilt or will put a
rebuilt on in myself.
The A/C did not work so I added a couple cans of freon to see if that would fix it, I maybe should have brought it in but I didn't. The A/C did start blowing cold air, as I was adding I could see and hear the compressor kicking in, so I'm thinking it was pretty low.
Anyway since I added the R134 the idle races on startup.
Is there any connection between the two or is it just coincidence. I don't have any codes except for the P1870, but maybe that can muck up some other things also.

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