Help Identifying Part in Engine Bay
Thread Starter
Intermediate
Joined: May 2023
Posts: 43
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From: DMV
Help Identifying Part in Engine Bay
Does anyone know if this part should have some type of cap on it? I have no idea what its called to search the forum or the internets to see if its missing a cap or its ok how it is. Any help is appreciated!
Melting Slicks
Joined: Jun 2014
Posts: 2,204
Likes: 491
From: NJ
That is the A/C refrigerant high side port and yes it comes with a sealing cap and yours is missing. The refrigerant type is R-134a, so you need a sealing cap for that type of refrigerant and it must be for the high pressure side of the system and not the low side.
Burning Brakes
Joined: Feb 2022
Posts: 818
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From: Bakersfield, CA
From Vintage Air...A “high pressure safety switch” disengages the compressor clutch on the compressor if internal pressure exceeds safe limits (406 psi) and then re-engages the compressor clutch when the pressure is back down within acceptable limits. A “low pressure switch” disengages the compressor clutch if there is excessive refrigerant loss (below 30 PSI). A “Binary Switch” incorporates both of these protections into one switch. A “Trinary Switch” incorporates both high and low pressure cutoffs, plus adds an “electric fan engagement signal” (at 254 PSI) feature to help bring internal temperatures down. These switches are great insurance on any system, and should ALWAYS be incorporated. See Safety Switches.
Cheers!!!
Cheers!!!
Melting Slicks
Joined: Jun 2014
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From: NJ
Moderator, Tech Contributor
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From: Cape Coral, Florida
From Vintage Air...A “high pressure safety switch” disengages the compressor clutch on the compressor if internal pressure exceeds safe limits (406 psi) and then re-engages the compressor clutch when the pressure is back down within acceptable limits. A “low pressure switch” disengages the compressor clutch if there is excessive refrigerant loss (below 30 PSI). A “Binary Switch” incorporates both of these protections into one switch. A “Trinary Switch” incorporates both high and low pressure cutoffs, plus adds an “electric fan engagement signal” (at 254 PSI) feature to help bring internal temperatures down. These switches are great insurance on any system, and should ALWAYS be incorporated. See Safety Switches.
Cheers!!!
Cheers!!!
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as mentioned, you can drive the car but put a piece of electrical tape over the port until you can get the cap.