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Bought the low ac line that runs from compressor to expansion block. It came without the ability to hook up that sensor. Will I still have ac if I leave it disconnected or do I need that sensor? New rock auto line on the right Refrigerant leaking out sensor and expansion block
and and why do I notice a lot of LT1 cars without that top sensor? Did certain years have it and others didn’t? Mines a 93.
I made a post and then deleted it because my '96 only has the one sensor. I have no idea about 93's. My thoughts are since it uses both sensors you do need both of them. If you were to rig the system to use only one sensor it may not run properly and there's a possibility you will burn out the compressor.
93s had a low pressure switch (which the port is missing from your new pipe). You could conceivably bypass it with a jumper if you need to (not saying that is absolutely safe in all situations).
93s had a low pressure switch (which the port is missing from your new pipe). You could conceivably bypass it with a jumper if you need to (not saying that is absolutely safe in all situations).
what does this switch alternate? What’s the reason the 1st year had it and the others didn’t?
93s had a low pressure switch (which the port is missing from your new pipe). You could conceivably bypass it with a jumper if you need to (not saying that is absolutely safe in all situations).
I can only ad.... on a different set up, 94 LS/SS S-10, I had a corvette 5.7L Gen II LT1 Motor & Trans.
My sensor went bad and I was never able to find the right replacement so I bypassed it one really hot day with a jumper and the ac started working again. Being a gambling man (LOL) I ended up leaving the jumper on it and eventually sold the truck to someone in my car club many years ago. He still has it and the AC is still working fine. Like shbox said, I cant say its the right thing to do or it's safe, I'm just saying i did it and the ac is still working many years later....
what does this switch alternate? What’s the reason the 1st year had it and the others didn’t?
It disables the compressor if the pressure drops below 6 psi and re-enables it at 27 psi. Just a change in architecture, I guess. My assumption is that when they changed the computer in 1994, they incorporated programming to use the pressure sensor in the high side to serve the same function.
Now I have a 1993 service manual thankfully. Probably 1000 pages in the book. Hard to come by but according to what it says in the pictures I could run the line without that sensor?! The thing is once refrigerant gets too low the compressor won’t shut off at it’s normal time to prevent possible damage to compressor?! Can someone verify that? I don’t see how a 93’s A/c seems more advanced than 94-97’s.. Diagram #35 and #36 Low Cut off switch detailed
with all that being said I could run without the sensor, I’d be running just like a 94’s through 97’s right?...
It disables the compressor if the pressure drops below 6 psi and re-enables it at 27 psi. Just a change in architecture, I guess. My assumption is that when they changed the computer in 1994, they incorporated programming to use the pressure sensor in the high side to serve the same function.
ahh did not read that before I made my last post 🤔👌👍
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Low side ac line no sensor 
