How Can I recharged the AC on a Lnad Rover Discovery, it it the same as every other car?

Question

I need step by step instructions thanks

Answer 1

Provided the car is a 92 or newer (r134a) the steps are quite simple.

First make sure you have a hose with a guage so you can be sure on what the pressure is before and after putting in more freon.

1) Turn the car on and put the a/c on maxium cooling.
2) Hook the hose to the low pressure port in the engine compartment. It will either have a blue cap or a black cap with an L on it. IT is the only one the hose will fit on and will be the smaller of the two.
3) Check the pressure and add freon if needed.
4) Shake the can well as per the instructions of the can.
5) Screw the can onto the hose and pierce the can with the tip in the hose then loosen the screw so the freon is able to go into the line. You will be holding the can upside down and a glove is recommended as the can will get cold.

Tips) The pressure reading will not be accurate unless the A/C clutch is spinning with the belt IE the freon is cycling through the system.
The guage reading will not be accurate while the freon is being sucked into the system. So you will have to close the hose by tighting the screw into the can to recheck the pressure.
The ambient temperature outside affects what the low pressure outside should be. The hotter it is outside the higher the low pressure inside will be.

Answer 2

Just get a can of refrigerant with a built in gauge and read the directions. If you're not sure that a charge is all it needs, you'll need to hook gauges up to the high and low sides at the same time and know how to compare the two to know what's happening in there.

Answer 3

Take it to an automotive heating and air conditioning shop and let them do the job. You probably do not have the equipment to do the job.