It makes no difference if I take the system out of auto mode and into semi-auto. What I did notice today is the clutch is not engaging at cold start, even when the radiator fan is engaged (when A/C on). I actually took a flash light and observed the clutch under the hood. But after a short drive, the system starts working. I checked under the hood and noticed the clutch engaging and disengaging along with the radiator fan after that short drive.
Now, however, after recharging the system, I have a new problem! After the system warms up, it cycles on only momentarily, then off as if it were in some sort of self protection mode. The cooling is degraded, as you might expect. This just happened last night after I finished recharging the system. I left the car sit for about an hour, then I put the pressure gauge on it and while the compressor was engaged continuously (before it went into the cycling mode) it measured 32 PSI. But when I took a static pressure reading after engine shutdown it built up from 50 PSI all the way up to 80 psi. I'm not sure what the static pressure should be, but perhaps I've overcharged causing this new system power on/off cycling problem? When it cylces on/off you can hear sort of a metallic "pop".
Tuesday, August 25th, 2020 AT 2:00 PM
(Merged)