Low pressure port on the A/C system - S-10 Forum
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Low pressure port on the A/C system

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Old 08-01-2005, 04:04 PM   #1
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Low pressure port on the A/C system

Can anyone help me locate the low pressure port on my A/C. it's a 93 GMC sonoma with the 4.3. i bought an A/C recharge kit for $30 and i can't find the low pressure port anywhere. please help.
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Old 08-01-2005, 04:09 PM   #2
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Re: Low pressure port on the A/C system

It's the port on the accumulator. The silver tank attached to your fan box. The low side of your a/c system is always going to be the larger hose.
Old 08-01-2005, 04:51 PM   #3
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Re: Low pressure port on the A/C system

I'm not sure the difference between your 93 and my 01 but on mine its on the left side of the accumulator and it should have a dust cap on it. But the kit you bought shouldn't fit on anything but the low pressure port.
Old 08-01-2005, 05:26 PM   #4
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Re: Low pressure port on the A/C system

I just did the retrofit last week.Its right on the accumulator which is silver.Plus when you go to put the adapter on the low port adapter will only fit the hose and the low port on the accumulator.You can not screw the low port adapter on to the high port service because it will not fit.Also make sure all freon out of system>Mine is cool and i like it plus i only have to smell the oil im leaking when i stop at a redlight
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