:I am convinced my a/c charge is correct but I guess it cant hurt to add more which I'll do tomorrow, uh...yeah it can hurt. An overcharged system won't cool worth a damn and may blow your pressure relief valve But shouldnt that logic also mean the car shouldnt cool when its dark out/low ambient temps? No. Lower ambient temp increases the effectiveness of the condenser, so it makes sense that the system cools better at night
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