AC pressure switch location/troubleshooting - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Sebambam · 03-06-2021, 09:36 AM

hi Guys
I just got a 010 L99 SS

My AC doesnt blow cold . Heat works
Compressor Clutch turns by hand .Fuses are OK, Relay is OK.

So i would like to Jump the AC pressure switch to see if it jumps on then i know its low on refrigerant ( i guess).

Where is the exact location of the Pressure switch ? is there only 1 pressure switch? i assume it could be this one here near the HIGH side port?

any other options to verify if my compressor is done?

Silver14 · 03-06-2021, 09:44 AM

Check out the diagram on this parts page for the pressure sensor location.

https://www.gmpartsdirect.com/oem-pa...Y4LWdhcw%3D%3D

Sebambam · 03-06-2021, 01:18 PM

Quote:

Originally Posted by Silver14

Check out the diagram on this parts page for the pressure sensor location.

https://www.gmpartsdirect.com/oem-pa...Y4LWdhcw%3D%3D

thanks but that dont tell me exactly the location , i guess the diagramm shows it somehow but i cant really tell.

Badbubba · 03-09-2021, 09:35 AM

Be certain you know what your doing before you start jumping things out. This "switch" stated above appears to be a sensor. 3 wires. Is the clutch engaging? I would think there should be a low pressure switch/sensor, and that would appear to be the sensor in the diagram. If so, it would be on the larger diameter pipe, suction line. Could it be the blend door?

WantedPzen · 08-09-2021, 07:02 PM

According to inexorable statistics, we spend one-sixth of our lives behind the wheel. And each of us wants to spend this time in comfort: at least with air conditioning. Now this invention seems something trivial, but in the first half of the last century, climate systems occupied half of the trunk, and their cost was one third of the price of the whole car. Is it necessary to know the device of automobile conditioner? Definitely - yes. If you understand the principle of its work, it is easier to find the reason of appeared problem. How the air conditioner is constructed, what problems you can expect from it and how to service it you can learn here - airconservicing.org. Good luck to you!

G8One2 · 08-09-2021, 07:17 PM

Its a sensor, not a switch. The ECM receives the command from the HVAC module to engage the compressor clutch. The ECM is what send the ground signal to energize the A/C clutch relay. If you want to force it to engage, there are ways to do that, but NOT by jumping any wires on the pressure switch.

Ingrid · 09-19-2021, 03:44 AM

I'm not an expert in AC systems by any means but usually if the compressor is cutting on and off like that its from not enough refrigerant in the system. Iirc it could also be from too much in the system so I would recover everything and fill it by weight

03-06-2021, 09:36 AM	#1
Sebambam Drives: 2010 2SS Join Date: Feb 2021 Location: Duncanville TX Posts: 17	AC pressure switch location/troubleshooting hi Guys I just got a 010 L99 SS My AC doesnt blow cold . Heat works Compressor Clutch turns by hand .Fuses are OK, Relay is OK. So i would like to Jump the AC pressure switch to see if it jumps on then i know its low on refrigerant ( i guess). Where is the exact location of the Pressure switch ? is there only 1 pressure switch? i assume it could be this one here near the HIGH side port? any other options to verify if my compressor is done? Attached Images

03-09-2021, 09:35 AM	#4
Badbubba GrINned & JUICEd Drives: 15STI, 10Expy, 10 2SS/RS M6, 47KB1 Join Date: Nov 2009 Location: Pittsburgh, PA Posts: 1,247	Be certain you know what your doing before you start jumping things out. This "switch" stated above appears to be a sensor. 3 wires. Is the clutch engaging? I would think there should be a low pressure switch/sensor, and that would appear to be the sensor in the diagram. If so, it would be on the larger diameter pipe, suction line. Could it be the blend door? __________________ GPI SS3 Cam & stuff,N.O. Plate(dedicated fuel tank,progressive,fuel hose upgrade,remote opener,heater,console switches),LNC2000,CTAP,ARH 1 7/8" LTs/gutted cats/X pipe/mufflers,Jet Hot coated LTs,GPI HPT Tune,CAI, Scoop,Rx Catch Can,Gates heater hose relocation, Remote clutch & auto brake res,Metco loop,Momentum Tunnel Brace,TSW Nurb 18",555 & 05,Pfadt trailing arms & toe rods,Autometer WB,Fesler Pillar Pod,LED strips (int),Lloyds floor & trunk mats,LED DRL/front turn & license plate,DRL harness,VLEDs tail lights,Plasticoat Bowties. Ord: Oct 5, 2009 Rec: Nov 19, 2009 13.17@112.6 stock

08-09-2021, 07:02 PM	#5
WantedPzen Drives: camaro Join Date: May 2021 Location: london Posts: 3	According to inexorable statistics, we spend one-sixth of our lives behind the wheel. And each of us wants to spend this time in comfort: at least with air conditioning. Now this invention seems something trivial, but in the first half of the last century, climate systems occupied half of the trunk, and their cost was one third of the price of the whole car. Is it necessary to know the device of automobile conditioner? Definitely - yes. If you understand the principle of its work, it is easier to find the reason of appeared problem. How the air conditioner is constructed, what problems you can expect from it and how to service it you can learn here - airconservicing.org. Good luck to you! Last edited by WantedPzen; 08-11-2021 at 06:28 PM.

09-19-2021, 03:44 AM	#7
Ingrid Drives: audi Join Date: Sep 2021 Location: Italy Posts: 2	I'm not an expert in AC systems by any means but usually if the compressor is cutting on and off like that its from not enough refrigerant in the system. Iirc it could also be from too much in the system so I would recover everything and fill it by weight __________________ minotaurfightstore Last edited by Ingrid; 06-07-2022 at 07:27 AM.

03-06-2021, 09:44 AM	#2
Silver14 Drives: 2014 SIM 2SS Join Date: Sep 2015 Location: Charlotte, NC Posts: 925	Check out the diagram on this parts page for the pressure sensor location. https://www.gmpartsdirect.com/oem-pa...Y4LWdhcw%3D%3D

08-09-2021, 07:17 PM	#6
G8One2 Drives: 2014 Camaro 2SS Join Date: Feb 2015 Location: Metro Detroit Posts: 492	Its a sensor, not a switch. The ECM receives the command from the HVAC module to engage the compressor clutch. The ECM is what send the ground signal to energize the A/C clutch relay. If you want to force it to engage, there are ways to do that, but NOT by jumping any wires on the pressure switch.