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Where is the low side port to add in new refigerent for 1998 ls1?

This is a discussion on Where is the low side port to add in new refigerent for 1998 ls1? within the General Help forums, part of the LSx Technical Help Section category; Hello everyone! I need some help adding refigerent on my new air condition condenser. I recently got relocated to dallas ...

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    Junior Member arnoldonsite2's Avatar
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    black with blue flames
    1998, ls1 pontiac formula

    Red face Where is the low side port to add in new refigerent for 1998 ls1?

    Hello everyone! I need some help adding refigerent on my new air condition condenser. I recently got relocated to dallas from san francisco a week ago. Can anyone tell where is low side port on my 1998 ls1? I bought a can of refigerent, the instruction on the can say the port is located between the firewall and the compressor with a black cap.... Well on my 1998 T/A has a black cap butt is actually on the evaporator, not in between them. Can anyone tell me exactly where i can add refigerent on the 1998 ls1 system?

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    Veteran Hi-Po's Avatar
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    1999 TA WS.6

    yep, you cant mess it up. if you need some more info on AC i can help ya with low side pressures and high side pressures/ what they should be and what -not. good luck!

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    Junior Member arnoldonsite2's Avatar
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    black with blue flames
    1998, ls1 pontiac formula

    The refigerent that I bought fits on the small orifice. What does big orifice use for? Does it use to purge air? What device do i need on larger orifice?

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    Senior Member 02z28ls1's Avatar
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    2002 Z-28 Camaro M6

    You use both ports to check pressures with. Hook up your little can to the high side and it will blow up at the higher pressures. Purging air out is something a shop can do-you won't do it at home. Take it to a shop and pay them to do it-you obviously don't know what you're doing. No disrespect intended, but you're probably wasting time and money trying to do it yourself.

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