A/C Aluminum line GM Part #14090457 needed
 

I have an 86 Sport Coupe with a V6. The A/C has stopped working because of leaking valve. I'm told that the part is not available, and I have not found any information about replacement or repair. Has anyone repaired/refurbished these lines and valves? My car has 82K miles and has been in the family from day-1. It has been a weekly cruiser for me, and I'd like to keep the A/C going here in Floridia. It was converted from R-12 many years ago. Any help/solutions will be appreciated. Thanks.

Is it the Schrader valve leaking?


The part number is just an aluminum line with a pressure switch.

Yes, the valve is leaking. The mechanic says it is pitted and the new valve still leaks? I know nothing about a/c systems but was hoping someone would know how to fix the situation.

Correct me if I am wrong. Looking at the part number you provided, there isn’t a valve, just a pressure switch.

I'm not sure what the part looks like and the GM drawing is terrible.

That said, there are places that make/fix AC hoses. I've never used one, but maybe you can check with them. Like these guys: https://coldhose.com/pages/ac-hose-repair

I have had shops repair AC and power steering lines. Typically it was just them replace the rubber hose portion of the line. They might be able to repair the valve by cutting it off and welding a new one in.

I am not too familiar with the 2.8 cars but I am assuming the part number you post has a high side port on it. The schrader valve on the port is leaking out refrigerant. Whoever looked at your AC system said they replaced the schrader valve but says it’s still leaking due to putting on the port.

What I don’t understand is you said it was converted from R12 to 134a. To convert it requires you to screw a r134a port on top of the old R12 port. Why not just replace the 134a port completely with a new one?

Could you take a pict of the valve that’s leaking?

Here is a YouTube video of the situation. Thanks to all for your input!
https://na01.safelinks.protection.ou...%3D&reserved=0

That video was definitely helpful. It looks like that metal line has your high pressure port on it. Since this was a R12 system that was converted over to R134A you can replace the entire port. It should just screw off. You can get replacements at any parts store. I am not sure why your mechanic did not recommend it.

https://www.autozone.com/cooling-hea...kit/142674_0_0