Air Conditioning Problems?

[Zack88]

I wasn't really sure where to post this but since it's under the hood I put it here. If their is a better section feel free to move mods!

I've only owned my 99 crew 2500 with the 350 for a little over a month now, when I got it the ac didn't work so I jumped the compressor switch on the accumulator and got it working with a little over a can and a half (the first one leaked a lot before I got the switch jumper in place) .

It had been cooling okay since then and the jumper stayed because the switch was bad until last Friday I replaces the switch and it all worked fine ( I have the Schrader under the switch).

I drove it home from work last night and it wad cold the whole trip but today it's not cool at all. I jumped the switch again and it's still not cooling so I'm dealing with a leak somewhere!

When I pulled the cap off behind the compressor originally it was leaking and I charged it then it still leaked until I put the cap back on, I'm sure that's not right but it didn't seem like a normal Schrader valve? What do I need to replace it with? That's my first culprit any other ideas what to check? I don't have a set of gauges just the inline one on the hose for the Freon can.

 

[96Z71ECSB]

The Schrader valve is the leak. The cap will not hold the freon in the AC system.
You will need to get a Schrader valve tool to remove it. The tool is usually a little longer for AC system Schrader valves compared to tire Schrader valve tools.

Remove the Schrader valve slowly. There may still be a little pressure behind it. You don't want it to shoot out and loose itself.
Take the removed Schrader valve to any parts store and they should have a new one for you.
They are pretty standard across all makes and models of vehicles.