How To Check Car Ac Compressor Pressure. Before you know how to tell if a car AC compressor is bad or not you have to know the reason behind the failure of AC compressors. When the compressor shuts off or you turn your car off the pressures in the system will equalize between the high and low side so the low side pressure.
To do so grab a lead from the batter to determine whether the clutch engages. AC Compressor Is Locked Up. Basic automotive air conditioner pressure testing.
If there are readings on both the high and low sides but they are not.
But make sure you know how to check ac pressure in a car so you dont get a false reading. Step 5 Inspect for continuity at the. The compressor will have two metal tubes coming out of the back or sidetop of unit. You cant accurately diagnose your cars AC by using just the low-pressure gauge on a recharge kit because youre only seeing pressure on.
