first clear the codes - either by on board diagnostic or removing negative battery cable for a short while.
then start the car and hook up the gauge and then turn the ac system on when it should try to kick on before it realizes it does not have enough coolant. At that point the gauge will show you that it is in fact low on coolant. Simply get the amount needed (should be in back of vehicle manual) of r13a coolant and gauge with trigger. follow the instructions and what you will notice is that the compressor will turn on and the gauge read low - then it will turn off because of lack of coolant and will read high (pressure) then back and forth back and forth - the whole time this is happening you should be adding coolant as per the instructions on the bottle. After awhile and it will take longer than you would think the compressor will finally kick on and stay on for longer and longer periods of time as more and more r13a can get into the system. - keep going until you reach the correct pressure.
If you want to find out if you have a leak get a can of the r13a that has the chemical which will glow under black light and leave the ac on for awhile and shine a UV light to try and find the leak.
hope this helps
then start the car and hook up the gauge and then turn the ac system on when it should try to kick on before it realizes it does not have enough coolant. At that point the gauge will show you that it is in fact low on coolant. Simply get the amount needed (should be in back of vehicle manual) of r13a coolant and gauge with trigger. follow the instructions and what you will notice is that the compressor will turn on and the gauge read low - then it will turn off because of lack of coolant and will read high (pressure) then back and forth back and forth - the whole time this is happening you should be adding coolant as per the instructions on the bottle. After awhile and it will take longer than you would think the compressor will finally kick on and stay on for longer and longer periods of time as more and more r13a can get into the system. - keep going until you reach the correct pressure.
If you want to find out if you have a leak get a can of the r13a that has the chemical which will glow under black light and leave the ac on for awhile and shine a UV light to try and find the leak.
hope this helps
