Why no Gauge? AC Overcharged?
Is your AC Overcharged? Why not use a low-side gauge to see if your system is charged correctly? Because low-side gauges do not work on many of today’s vehicles. Modern A/C systems use a Thermal Expansion Valve (TXV) with a sensor bulb, which can cause inaccurate pressure readings! Check out these testimonials from major retailers and see some of the problems caused by overcharging.