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yes... that *is* fun :) I was full of fear after reading some of the warnings in the FAQ about the 700/900 series (my wife's 940 also has a bad AC)
It sounds like you think that I'm still low on coolant. If there's an emergency blow-off, then it does seem unlikely that I could wreck the system with too much R134a.
It may be notable that last year, when I got this car, the AC didn't work. Without a whole lot of research, I attempted to charge up the system and found that the low-pressure side wouldn't take and ounce of additional coolant.
I got the same performance as I've described (click-on, click-off) After doing some research, I decided that it must have been over-pressurized.
But I guess if it had, the pressure relief on the compressor would have blown.
So another thought... I've dropped about $70.00 on coolant boost kits. Midas will professionally evacuate and refill my system for ~$120. I didn't want to go that route because I feared that I needed a new pressure sensor or similar. If this really just is old/poor/too-little coolant, perhaps I should spring for the professional refill? But if I'm just a few PSI from proper function, then another can of r134a ought to do me...
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