How do I add refrigerant to my car's AC?

Answer by  Amber40 (24961)

Compressed refrigerant can be very dangerous and you can really mess up your ac system if your not careful. You should be able to refill the line on a specific port on the line. Make sure you fill the right line.

Answer by  Ralphie1954 (420)

Look at the A/C lines on the passenger side of the engine compartment. Your fill connector will be located on the larger diameter, low side hose.

Answer by  worker8852 (129)

You should use a gauge to monitor the recharging process. Though not absolutely necessary,a gauge will help you recharge your A/C system more accurately,and reduce the chance of undercharging or overcharging. A high pressure A/C gauge can be connected tothe HIGH pressure service fitting, or alow pressure A/C gauge to the LOW pressure service fitting,or gauges can be attached to both fittings

Answer by  mikkie180 (167)

Going to have to make some assumptions here since no vehicle information was provided. I will assume it is a later model car using R-134. Get a can of the R-134 refrigerant that has a charging hose and a gauge built into the can, connect it to the low pressure side of the system, follow the directions on the canister.