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I recently snapped the plastic part of the plug off my a/c cycling switch (mounts into hose on back of compressor). Will fixing it be as simple as getting a new one and threading it on, or can I expect it to spew freon?
Snap a pic and post it .... if the high side switch is broken then your going to have to evacuate the system. Low side means you unscrew it and thread the new one on. Super easy.
I don't know how to post. It's the one that has the brass fitting on the hose on the back of the compressor. It looks like a male plug in. I bumped it changing the valve cover gasket.
Last edited by white1984Z51; May 18, 2016 at 08:33 PM.
Somone else will chime in on this ..... I thought the low side switch is over on the reciver/dryer and the high side is where your describing. If I'm right then your going to have to evacuate the system before you remove it.
Ok so good pics, and now that I have seen them they are not what I was expecting at all.
It actually kind of looks like you might be able to just unthread it. I think I would play it safe and recover the refrigerant anyway, especially if you have R12 in the system.
The dealership replaced the compressor a few years ago. I'd assume it's 134a. according to the pic, it is the high pressure safety switch. mine is made different though, it didn't actually break(more like snapped apart). glue?
The dealership replaced the compressor a few years ago. I'd assume it's 134a. according to the pic, it is the high pressure safety switch. mine is made different though, it didn't actually break(more like snapped apart). glue?
The dealership replaced the compressor a few years ago. I'd assume it's 134a. according to the pic, it is the high pressure safety switch. mine is made different though, it didn't actually break(more like snapped apart). glue?
If the R12 was replaced with R134, there should be a label stating so. The test/charge ports for the R134 are larger than those for R12, also.
My high pressure switch will snap apart, too, but that doesn't bother the operation of the a/c, so long as you still have the small actuating pin in the center of the switch. It's "only" a safety switch, and the a/c will work fine without it. Its purpose is to shut off the compressor if the high side pressure goes too high, which may rupture the compressor seal. It is a "normally closed" switch that will open at about 400 psi.
a/c cycling switch
