my AC is not cooling i have put R12 in there too and still it's not ccoling can anybody know why

 

because you haven't diagnosed it.
does the compressor turn on?
have you checked for leaks?

 

yes the compressor works and i check for the leaks too no leaks and when u turn on the AC the out side AC line is cold but inside it's not

 

expansiopn valve could be plugged.

 

where is that and can u tell me how to change that thanx

 

unless you have a MACS certification I can't.
Cause it would cause you to vent the 12 into the air which is illegal.
of course the FSM has that info.
Now if you had an R134a retrofit done instead of the 12......

 

can i change the R12 R134a and to do that what i have to change and there is that valve

 

you'll need to have a shop evacuate the R12 out of the system.

you'll need retrofit fittings, I have to look where the valve is, haven't had to work on mine. ICE cold AC still good from factory (i'm assuming)

 

when u remove the R12 from the sys then u can put the R134a in there that's it or you have to change some thing in there too

 

i belive you have to change some stuff, not positive, but pretty sure

 

if you open the system, you should replace the reciever/dryer
BTW that pic was of the expansion valve.
when you recharge the system with r134 don't forget the dye and the oil.