How do I retrofit ac r13a in a 1991 Mercury Capri?

Answer 1

Buy a kit.. but first you have to have all the old Freon removed from the systmen and it vacuumed out... You can remove the old freon one of 2 ways.. one is enviromentaly friendly, the other is not.. The unfriendly way, which I do not recommend, is to disconnet the A/C line at any point in the systme and allow all the Freon to escape.. but this is very bad for the ozone layer.. the responsible way it to take it to a professional and have them remove it for you.. once the old freon is out the system needs vacuumed. This removes any moisture (Moisture BAD !) and makes it eaiser to put new freon in.. This is accomplished my hooking up the low pressure side, looks like a tire valve with a blue cap on it on the line going into the compressor, to a vacuum pump and drawing a vacuum of 20 - 30 mg Hg for 2 to 3 hours.. Vacuum pumps that work on compressed air are available on E-Bay for $20. Once this is done, the kit will have adaptors That go on the the high pressure (Red Tire valve looking thing) and the Blue Low Pressure side tire valve looking thing... No you need to hook up a Manifold gage to the system.. these are also available on E-Bay for around $30 Hook the blue side up to blue and red up to red.. Close all the valves.. Then hook up a can of freon to the yellow side in the middle of manifold gage.. Start the car turning the A/C on full blast..open the valve on the freon, then open the blue valve on the gage.. after 20 or so min.. all the freon from the can should go into the system an the compressor will kick on.. the compressor will not start until freon is in the system at a certain pressure.. Fill the system until you get 150 to 200 PSI on the high pressure side and 20 -30 psi on the lower pressure side. DO NOT ADD FREON WITH THE HIGH PRESSURE SIDE OPEN THE CAN OF FREON COULD EXPOLODE OR YOU WILL DAMAGE YOUR COMRESSOR...