Ok, my 89 5.0 was converted to r134a by the last owner, if I put a can in it blows ice cold for about a day. I've ran cans of the pink dye through and can't find a leak. Just looking for some advice before I put more money into finding the leak.
Common A/c Leak Spots.
- Thread starter billison
- Start date
liljoe07
5 Year Member
Possibly the evaporator if you dont see anything in the engine bay. Another spot people miss is behind the compressor pulley and clutch.
mikestang63
SN Certified Technician
O rings in the lines by the radiator are prone to leaking. In fact you should change them to ones for 134a before you convert. If he didnt change them, they are probably eaten up.
mikestang63
SN Certified Technician
yeah. any parts store will have them. Use a set of A/C-fuel line tool to separate the lines.. I think the 134a O rings are green? Use some A/C compressor oil to lube them so they dont tear.
agreed, any parts store will have the proper "O" rings, though it might be best to go to a place that specializes in automotive a/c, as they can give you any needed advice that a parts store wont be able to give.
mikestang63
SN Certified Technician
They haven't sold R12 in 20 years so the O rings will be 134A compatible
Factory Air O-Ring & Gasket A/C System Seal Kit 26717: Advance Auto Parts
I'd still be doing what liljoe said, as those are two places known for ac leaks and are not easy to see. The evap is under the dash. If it were the O rings, you;d see it wet all on the lines most likely with gunk on the lines.
what you fail to remember though is that there ARE still R12 systems out there in operation. however i do not know why you quoted my post, since i said nothing about R134a compatibility.
mikestang63
SN Certified Technician
