Read instructions if first time user.
Idq refrigerant gauge instructions.
A c recharge kits come with a built in pressure gauge.
A secondary scenario could be you have a newer car model you may in fact be using the new 1234yf refrigerant.
Begin to monitor the gauge by watching for the ac compressor to engage the clutch.
If this is the case then you will need to visit a dealership as there are not recharge kits out there yet for 1234yf.
The gauge is able to diagnose if a recharge is needed identify the current low side pressure in the system and determine increases in pressure during the recharge process.
Restart the vehicle and make sure the air conditioner is on the highest settings.
A c pro r 134a professional gauge with can adapter features a diagnostic gauge easy to use trigger dispenser 24 in.
The easy to read gauges accurately measures pressure and monitors condition of refrigerant.
Idq complete r 134a air conditioning manifold gauge set with hoses and quick connects comes with sight glass and a full set of hoses that include 48 inch red and blue hoses and a 72 inch yellow charging hose.
While charging rotate can between 12 o clock and 3 o clock every two to three seconds while continually agitating shaking the can back and forth.
Restart the vehicle and monitor the gauge.
Ez chill ezc110 4 car air conditioner hose and gauge for r134a refrigerant recharge kit for cars trucks more reusable.
Ez charge r134a direct charge tune up.
Be careful not to pull the trigger at this time as this will release refrigerant from the ac system into the atmosphere.
Hose quick connect coupler and can adapter.
Interdynamics heavy duty r 134a charginghose has an easy to read extra large gauge the instructions are not 100 clear but after a bit offiddling around i.
Contains 36 oz of r134a deluxe u charge hose with gauge and instructions interdynamics tup 134dc.
Attach the recharge hose to can and vehicle a c low side service port.
Once this is done you can now check the pressure gauge.