I meant to take another look at the suction hose last night in the dark with the UV light but forgot. This is what the evaporator core looks like in my '69: https://secure.cougarpartscatalog.com/store/p/13509-A/C-Evaporator-Used-1969-Mercury-Cougar-/-1969-Ford-Mustang.html?attribs=87 The evaporator ...

So, I put a whole 12oz can in it, got the pressures up a bit, but the low side kept dropping back to 12ish psi after the system had been on for a while and shutting off the compressor. I went ahead and ordered all new lines for it, with a sight glass. At sometime it looks like someone bent the hardl...

Last night I got the UV light and looked over the system. When I first looked at the prestite tape I put on the expansion valve it was glowing green which was very concerning to me, but I cut a piece off of the roll and it glowed green also so I guess that is just how it shows up under the light. I ...

Yeah I felt a little weird about poking a hole in one of the refrigeration lines so that is why I asked before I did it, glad I didn't do it! :mrgreen: I did see in the factory service manual that they describe a procedure similar to what you said. What do you think is the best way to inject dye int...

Okay, I will do the procedure as you mentioned and post up the results. I was wanting to put dye in the system. One guy told me he injected it into one of the hoses using a hypodermic needle. Is that an acceptable way to do it? Looking back I wish I would have just put a quarter ounce of the liquid ...

Cusser, thanks for the reply! Is your name cusser because whenever you work on a car like my you call it every name in the book?! :lol: I thought the pressures seemed a little low. My car is a '69 Mercury Cougar and I'm using R12. The only thing that I know of that cuts the compressors on these syst...

Unfortunately I'm back :x Yesterday was the first time I took the car out on the road after doing the A/C work. The discharge air out of the vents didn't get as cold as I was hoping it would. Before I took it out I noticed I wasn't getting any water dripping out of the hvac drain, but thought maybe ...

Thanks for letting me know the proper term; I was having trouble finding it when searching around, but did run across this at Advance I was going to pickup https://shop.advanceautoparts.com/p/fac ... /3892794-P

Yeah I think it's an air side issue also. Hopefully the water control valve will fix my problem which my little experiment pointed to when I turned the A/C on with the engine cold and then the discharge air got warmer as the engine heated up. I had the TXV and evap outlet lines wrapped in a shirt fo...

I wasn't sure what was going on if it was my heat gun or something else. The only other way I have to read temperatures is with the heat sensor adapter that came with my multimeter. ok, I see now that you were using 36/60 as an example. I felt the in/out of the evap last night and if they aren't the...