I'm trying to help a friend recharge the AC on his 1998 Ford Ranger. It was stock with R-134A so there is no conversion required however I am having problems locating the low pressure valve to hook up the hose. I've found 2 valves: One located on the compressor itself and the other hooked to some thin tubing that disappears into the radiator. Logic tells me the second line is high pressure since the tubing has such a small diameter but I've never charged a system directly into the compressor before. Can anyone shed some light as to which is which or is there another one that I don't know about. TIA

 

I am trying to do the same thing, I looked at a parts catalog online and there were two different connection for high side and low side. I purchased a recharge kit and it would not connect to this line. The highside connectors on the parts side were identical to this connection, therefore I think the line coming from the compressor to the radiator is the high side.

 

Not sure which is which on the particular vehicle, but the low side should have a blue cap and the high side a red cap

 

Both are black, one goes into the expansion tank is smaller than the other connection, my hose kit fits into this connection, not the other side. I am reluctant to puncture the seal until I know which is which.

 

Same here...both are black but I haven't tried the connector as of yet. I am reluctant to puncture the seal also until I can find an answer. I'll post up if I can get an answer elsewhere.

 

Hi jinx66,

I answered your same A/C question which you posted in the Ranger Forum (Read my response here).

Please refrain from posting the same question twice in different forums ...refer to the FTE Guidelines if you have any questions about posting.

I would have emailed you privately to tell you this, but you have it shut off.

Again, welcome to FTE!