disregard. Except for history purposes. I troubleshot past this. Just didn't have the valve open far enough. Next post is where I'm at.
OK, I just drained some refrigerant by unscrewing the gauge and letting some pressure out.
While the gauge is open it sits at around 25-35, when it is close it climbs back up to around 80 with the AC full on.
I thought I had figured out that it wasn't clogged but it doesn't seem to matter how much I let out (unless it takes a really long time to drain), it keeps jumping back up to 80ish when I close the valve.
Last edited by rich.weber; 07-07-2007 at 12:46 AM.
If your compressor isn't working, the static pressure is SUPPOSED to be high, typically 80-120 psi, depending on the underhood ambient temp.
You just emptied a well-charged system (the tree-hugging hippie-crits and the eco-***** will be stopping by later) and then under recharged it.
Now you have two problems: A compressor that doesn't work and an undercharged system.
Get a real manifold gauge set. The low-side only gauges are more trouble than they're worth.
Fix the compressor engagement fault (original problem) and get it recharged to the proper level.
Read the threads in this sub-forum in which I've posted for the last couple of weeks. I've recently gone over all this and have at least once, described the complete circuit and how it works.
Will do steve.
So, no way to know right now.
Since it's undercharged, the clutch won't engage, and the pressure will not drop down to it's actual low side pressure. Get some real gauges to see what it's actually at on the high side, and determine if it's high enough to engage the clutch. Fill it to the proper level, and see if the clutch engages, if not either the clutch or compressor is bad. Could be that the 90 PSI I was reading was actually too low to engage the clutch and lower the reading to the actual low side pressure. After all, when I first took the measurement, the ambient temp was pretty high.
Am I reading into that correctly? I'll go read your other threads.
Last edited by rich.weber; 07-07-2007 at 02:16 PM.
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