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1st Gen Dakota '96 & Older Dakota's

Air Conditioning question

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Old 05-04-2010, 02:41 PM
kencor62 kencor62 is offline
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Default Air Conditioning question

Ok here go's. Last fall I re-filled my A/C and everything worked fine for about a week, then it started getting warmer, and quit again. I noticed that the valve where you install the freon was leaking, so I assume it may need replaced. Can the valve be replaced, and if so what is it called.This is in my 96' w/3.9, and the valve is located on the passenger fender.
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Old 05-04-2010, 02:51 PM
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Its called a schraider valve. (spelling)
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Old 05-04-2010, 03:43 PM
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The Schrader valve is on the fuel rail. Is this the high or low side fitting that is leaking? (Red or blue?)
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Old 05-04-2010, 03:49 PM
mmanahan1 mmanahan1 is offline
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ok i have the same problem, i was doin work on my engine and didint know what the little red valve was so i un screwed it and it crazy, now my ac dosent work how can i get it cold again
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Old 05-04-2010, 03:56 PM
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you'll hafta recharge it. There's a reason that valve is red, thats the high pressure side.
And why would you mess with something if you didn't know what it was?
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Old 05-04-2010, 05:57 PM
kencor62 kencor62 is offline
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It's got a black cap, and it's where I filled it last time. I used gauges, so I know it's the right one. But, the stupid thing is leaking and I'm tryin' to figure out if it is replacable.
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Old 05-04-2010, 06:21 PM
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Quote:
Originally Posted by kencor62 View Post
It's got a black cap, and it's where I filled it last time. I used gauges, so I know it's the right one. But, the stupid thing is leaking and I'm tryin' to figure out if it is replacable.
If it has the fitting where you can wrench it. Then yes you can replace it. But if its the small black cap that I'm thinking of. I'm thinking you may have a R-12 set-up still?

I replaced the valve in my Jeep last year and that was converted to R-134a by the previous owner. So that's why I'm wondering what you have. My 93 is still an R-12 set-up and needs to be converted. But that will have to wait. And I'm only saying what I was told by a friend of mine. Other than that I really don't know.
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Old 05-04-2010, 06:22 PM
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Quote:
Originally Posted by Dodge4lyfe View Post
The Schrader valve is on the fuel rail. Is this the high or low side fitting that is leaking? (Red or blue?)
IDK its some stupid valve.
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Old 05-04-2010, 06:43 PM
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Yes the AC high and low charge valves are Schrader Valves, that is the type of valve it is. The fuel rail has one too. So does the Truck Tires/ Car tires, bicycle tires. A Schrader valve works like below.

Yes it sounds like from above you need to recharge your system. Which is best for a shop to do it. First it needs to have the system vacuumed out, to get rid of all moisture. Next the correct amount of compressor oil. And the correct amount of refrigerant. If the system is the old R12 yes it needs to be converted into 134a. It is simple to do. Just add in the larger valves. You can buy a kit from autozone for $30 or so, check the website.

Click the image to open in full size.
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Old 05-06-2010, 03:30 PM
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Quote:
Originally Posted by Crazy4x4RT View Post
Yes the AC high and low charge valves are Schrader Valves, that is the type of valve it is. The fuel rail has one too. So does the Truck Tires/ Car tires, bicycle tires. A Schrader valve works like below.

Yes it sounds like from above you need to recharge your system. Which is best for a shop to do it. First it needs to have the system vacuumed out, to get rid of all moisture. Next the correct amount of compressor oil. And the correct amount of refrigerant. If the system is the old R12 yes it needs to be converted into 134a. It is simple to do. Just add in the larger valves. You can buy a kit from autozone for $30 or so, check the website.

Click the image to open in full size.
Dude, my dad priced R-12 for his old Caddy. And that **** is worth more then the car itself. R-134a FTW!
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Old 05-06-2010, 03:30 PM
 
 
 
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