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Help!! Where do I put AC Freon at? Where's the Low pressure Valve?

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Old 06-11-2013, 04:00 PM
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Default Help!! Where do I put AC Freon at? Where's the Low pressure Valve?

Hey Guys,

I have a 96 Audi A4 AWD and I am looking for the low pressure valve for the Freon to screw on to. I think I found it by the Cabin air filter. It has a switch on it though. Is that where I put it?? All help appreciated
Thanks

Last edited by ChrisBeOnIt84; 06-11-2013 at 04:02 PM.
Old 06-12-2013, 02:16 AM
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See if they have a picture of the location in box #2.

http://acprocold.com/ask-the-pro/port-locator/
Old 06-12-2013, 06:28 AM
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Originally Posted by ChrisBeOnIt84
Hey Guys,

I have a 96 Audi A4 AWD and I am looking for the low pressure valve for the Freon to screw on to. I think I found it by the Cabin air filter. It has a switch on it though. Is that where I put it?? All help appreciated
Thanks
There is no low side port on a 96, you are supposed to refill thru the high side (using the correct equipment).

There's a mastercool, adapter to fill it where the low pressure switch is located.It threads onto the schraeder valve.
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Old 06-16-2013, 03:00 PM
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Originally Posted by ChrisBeOnIt84
Hey Guys,

I have a 96 Audi A4 AWD and I am looking for the low pressure valve for the Freon to screw on to. I think I found it by the Cabin air filter. It has a switch on it though. Is that where I put it?? All help appreciated
Thanks
Low pressure switch is located by the cabin air filter housing, you will need to unscrew it and use an adapter that AudiMick showed above.
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