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Old 06-12-2018, 10:36 AM   #1
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Join Date: Sep 2012
Default 93 245 Where is the high side port?


I have read some internet magic and it seems that only SOME compressors have a high side port?

1. Where might this high side port be?
2. How can I address system pressures without one?

I am confused and want to be sure I'm not just spying the info for an R12 system and/or how different are the 940's R134 diagrams.

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Old 06-12-2018, 11:24 AM   #2
unbalanced chemical
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Join Date: Jun 2002
Location: Apache Junction, AZ

There is no high side port. If you want one take the correct hose to a local ac shop and they can add one.

There are many different methods you can use to properly charge an ac with only a low side port. Many of us have been doing it for a long time without issues.
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Old 06-12-2018, 11:31 AM   #3
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Join Date: Jan 2009
Location: Fort Joe Smith, Klendathu

I have 4 1993 240s
no high side port.
not on a 93 compressor, either.

I'm using 2 cans of Envirosafe, with a universal oil and normal orifice tube
Works great

I have BOTH belly pans and the pusher fans working.
Originally Posted by lummert View Post
Dammit, Lummert.
Originally Posted by Jesse8931 View Post
Well keep us updated on how your dumbass plan goes.
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Old 06-12-2018, 11:45 AM   #4
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Join Date: Sep 2012

Word. The AC is working fine and my low side pressure seems fine on my manifold but I was hoping to "optimize" stuff by checking the deltaT and seeing what's what since you know... I pulled this car out of a GD field and added a can of 134a to even see if the AC worked (this was like a year ago).

Anyway... cool I guess?
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