How to diagnose car AC problems yourself using professional techniques The tools you’ll need to professionally diagnose car AC problems You’re kidding yourself if you think you can diagnose car AC problems with just the gauge on a DIY recharging kit. First, a low side pressure reading really doesn’t tell you much. At the very least you need high and low side pressures, along with outside and center duct temperatures, and even then, you still don’t have the complete picture of what’s going on in your AC system. If you’re … Read More
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