A/C compressor clutch not engaging
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On The Tree
Joined: Sep 2015
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A/C compressor clutch not engaging I have a Vintage Air set up with my LS and I am running a new Holley Low mount compressor. I am getting 12 volts from the Vintage Air going out to the Trinary switch. But no power going out to from the trinary switch. I even swapped the Binary switch back in.
I am trying to make sure everything works before trying to charge the system for the first time after doing the LS swap. (had VA on previous SBC 350 in the car and it worked good)
Is the system not sending power out of the Trinary switch due to no pressure on the system? I bought a couple can of R-134 to try to give the system a charge, but not sure about by passing the Trinary switch and running 12 volts to the compressor. (I did try this to verify is the clutch engaged, and it did)
I am trying to make sure everything works before trying to charge the system for the first time after doing the LS swap. (had VA on previous SBC 350 in the car and it worked good)
Is the system not sending power out of the Trinary switch due to no pressure on the system? I bought a couple can of R-134 to try to give the system a charge, but not sure about by passing the Trinary switch and running 12 volts to the compressor. (I did try this to verify is the clutch engaged, and it did)
TECH Senior Member
Joined: Jun 2016
Posts: 22,293
Likes: 3,617
From: Central Cal.
Misunderstanding..I ↑↑↑ to signal what you said to do.
Once OP gets everything connected up on the car and running with the A/C set to max you should start noticing the compressor cycling once the refrigerant is introduced into the system..If still not cycling after the first can I'd start looking at the switch or worse the compressor itself.
Once OP gets everything connected up on the car and running with the A/C set to max you should start noticing the compressor cycling once the refrigerant is introduced into the system..If still not cycling after the first can I'd start looking at the switch or worse the compressor itself.
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Verdad Gallardo That's certainly the right thing to do but it can be charged without pulling a vacuum. I replaced the orifice tube and all the seals for the compressor and lines due to a leak and I just recharged it myself without pulling a vacuum to draw any moisture from the system. That was almost a year ago and still no leaks. Now it may get a little colder than what it is had I pulled a vacuum but its pretty cold.
That's certainly the right thing to do but it can be charged without pulling a vacuum. I replaced the orifice tube and all the seals for the compressor and lines due to a leak and I just recharged it myself without pulling a vacuum to draw any moisture from the system. That was almost a year ago and still no leaks. Now it may get a little colder than what it is had I pulled a vacuum but its pretty cold.