ac issues
#21
03-12-2012, 09:05 PM
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The only green wire I see in the circuit is on the A/C request circuit, from the heater control head, to the PCM. It runs thru both low, and high pressure cut off switches. If the switch is actually screwed into the a/c compressor, that is probably the high pressure cut-off switch. I don't know if removing it will discharge the system....
High pressure switch should have a light green wire coming in, and a light green with white trace coming out. Low pressure is light green/white in, and brown wire coming out.
High pressure switch should have a light green wire coming in, and a light green with white trace coming out. Low pressure is light green/white in, and brown wire coming out.
#22
03-12-2012, 11:11 PM
You grounded the light green wire, with white trace, and the system worked, so, that was after the HIGH pressure switch, near the compressor, right? The light green/white wire should run to another switch mounted to the line, or, on the receiver/dryer, they moved them around in various years. It will have the lg/w coming in, and a brown wire coming out, THAT is the switch that I suspect is bad.
#23
03-12-2012, 11:17 PM
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You grounded the light green wire, with white trace, and the system worked, so, that was after the HIGH pressure switch, near the compressor, right? The light green/white wire should run to another switch mounted to the line, or, on the receiver/dryer, they moved them around in various years. It will have the lg/w coming in, and a brown wire coming out, THAT is the switch that I suspect is bad.
#24
03-13-2012, 02:14 PM
The low pressure switch should be on top of the accumulator next to the PCM. As HeyYou stated.
And you are going to lose the 134a when replacing the switch. Which I suspect you don't have enough in it to start with. You need to release the pressure first. As in having it evac'd . I really don't like helping with AC issues. People can get hurt, and you need the right equipment to charge it correctly.
And you are going to lose the 134a when replacing the switch. Which I suspect you don't have enough in it to start with. You need to release the pressure first. As in having it evac'd . I really don't like helping with AC issues. People can get hurt, and you need the right equipment to charge it correctly.
Last edited by zman17; 03-13-2012 at 02:23 PM.
#25
03-13-2012, 09:29 PM
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The low pressure switch should be on top of the accumulator next to the PCM. As HeyYou stated.
And you are going to lose the 134a when replacing the switch. Which I suspect you don't have enough in it to start with. You need to release the pressure first. As in having it evac'd . I really don't like helping with AC issues. People can get hurt, and you need the right equipment to charge it correctly.
And you are going to lose the 134a when replacing the switch. Which I suspect you don't have enough in it to start with. You need to release the pressure first. As in having it evac'd . I really don't like helping with AC issues. People can get hurt, and you need the right equipment to charge it correctly.
.
#26
03-13-2012, 09:36 PM
#27
03-13-2012, 09:49 PM
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#29
03-13-2012, 10:15 PM
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Well Im looking into it some more like I said the two dealerships said no&in this link it says you dont have to discharge it other
http://en.allexperts.com/q/Auto-Air-...e-Ram-2500.htm
http://en.allexperts.com/q/Auto-Air-...e-Ram-2500.htm
#30
03-13-2012, 10:18 PM
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Well Im looking into it some more like I said the two dealerships said no&in this link it says you dont have to discharge it other
http://en.allexperts.com/q/Auto-Air-...e-Ram-2500.htm
Im gonna call around tomorrow to see how much to have a shop discharge it anyhow I guess.Hate to spend money if I dont need too
http://en.allexperts.com/q/Auto-Air-...e-Ram-2500.htm
Im gonna call around tomorrow to see how much to have a shop discharge it anyhow I guess.Hate to spend money if I dont need too