Quote:
Originally Posted by leddzepp
I've read where some people have just by-passed the POA update valve switch so that the compressor never shuts off when the AC is running.
I bypassed the one on my 01 Yukon about three years ago when I got tired of the compressor cycling off. It works great with no issues.
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You don't want to do that. If you make the compressor run constantly with an orifice tube system you will jack up the high side pressures and blow hoses among other problems. That low-side switch is there for a reason.
Your Yukon is probably low on refrigerant.
With a proper charge you should not see much cycling on that type of system.