#COOLANT FOR CAR AC IN WALMART HOW TO#

RELATED: AC Low Side Pressure Too High – Common Causes & Repair Costs 4. Once you are done, you close all of the valves and turn the pump off. You want to vacuum down the system for at least an hour. Start running the pump and open both valves on the gauges. Connect the low side port to the blue hose and put the red hose on the high side port. Hook up GaugesĪll of the valves on the manifold gauge should be closed. This is an affiliate link, which means that at no cost to you, we may receive a small commission for qualifying purchases. You want to add the retrofit label on the connectors so other people who buy the car after you know to use R134a. Use a wrench to tighten this to the appropriate specs as well. Put the high side fitting over the old connector. You will need a wrench to tighten it to factory torque specs. Turn the low side fitting over the existing part. You must add new fittings to both the low and high side service ports on the AC system. Not only is it bad for the environment, but it’s illegal, too. If you release R12 into the environment, you could get in trouble. This should always be done by a licensed professional, because it must be disposed of properly. Discard R12īefore you do anything else, you need to pump out the R12 refrigerant that is currently in the system. This information is for entertainment only. Look up the laws and regulations and make your own decision if it’s worth it or not. Simply replacing the fittings and filling it with the correct amount of R134a will work well on most older car models, but this is not a permanent result.Ĭonverting your R12 AC system to R134A refrigerant without replacing the O-rings and other necessary parts may be illegal where you live. In some models, you also need to replace the pressure switches. But we’re talking about a $2000+ cost, so it’s probably not worth doing all this if your car is old.įor many car models, there are specific conversion kits that contain the necessary parts for the conversion.

If you want to make a proper conversion, you will also need to replace all the O-rings, new accumulator, new filter and so on. The guide below is how you can convert your R12 to R134a in an older car. Still, R134a is much more tolerant of under- and overcharging. Even if you charge the system properly, you might notice it doesn’t get as cool. However, R134a isn’t going to cool the same as R12. Subtract ¼ or 0.25 pounds from this number. To discover the capacity for refrigerant, you want to use the specs for the current system and multiply the R12 charge by 0.9 or 90%. To ensure the right charge, you must fill the new system with between 75 and 85% of the factory-set capacity for optimal cooling.

#COOLANT FOR CAR AC IN WALMART HOW TO#

Can you mix R134a with R12? How to Calculate How Much R134a Is Needed

Coolant for car ac in walmart