Trying to figure out if I am running r12 or 134a. It looks like it may have been converted looking at the low side input because it appears a 134 nozzle was installed but the high side doesn't have an adapter installed. I have pics but not sure how to post them. Help!

 

Might be nice to just have a hint what your working on.

If the system is working now What do your Manifold gauges tell you??

Ya gotta love when people convert things and do a hack job.

 

It's 92 extra cab dlx 4x4 22re. I have owned the truck since 1999. I think we charged the system once in that time span. I was a teenager back then and I can't remember what we did or if we did it correctly. I just cleaned out the a/c blower which was completely full of insulation and debris from mice I suspect. Air flows out of the vents but the compressor doesn't engage when the a/c button is turned on. So my first inclination is that the system needs to be charged but I want to make sure I don't fill with134

 

If it wasn't converted the right way.

 

If it has a 134a fitting on the low side then someone put 134a in it. Is the compressor locked up?

 

Not that I am aware of. I think I am gonna have the system evac'd and finish the retrofit to ensure it is good.