1989 Toyota Corolla Where is the valve

Hi there,

Thank you for the donation,

Working on A/C systems is a specialists job, just trying to add refrigerant if the system is in-op may cause more harm or just be a waste of money if the system has a leak, the refrigerants are extremely dangerous,and should only be used with the correct equipment and safety gear, you need to know what the system pressures are before any diagnosis can be made, i suggest that you get this part of the diagnosis done, what are the symptoms that you have? you may have a leak and just adding refrigerant will not solve your problem.

Mark (mhpautos)

I have not had my vehicle serviced for AC in over ten years. It still blows cold air, just not as cold as it use to. I don't believe I have a leak, I think the fluid is just 'tired and worn out'. lol

I see the refill kits at Walmart and Auto Zone and being a single mother, I try to pinch pennies where ever I can.

Thank you.

Sabrina

Hi there,

If you over fill the system with refrigerant you can run the Chance of doing damage, that is why it is important to have the correct volume of gas in the system, the system will accept more gas than required, so you must take great care and not over charge, you should regally get the system checked first, the charge points should be on the compressor, and the refrigerant doesn't go off with age, so don't worry if its been there for some time.

mark (mhpautos)

Good advice by Mark, also remember that this is an R12 system, which you cannot buy.

The system would have to be converted to R134A and is best done by a shop.

Thank you very much, Mark. I guess I will have to take it to a shop, but I sincerely appreciate your time in answering mine questions. And thanks to those who have added more advice as well. lol I can see I am out of my depth here. I don't want to blow up my AC or get blown up, lol, so I will go to a shop.

Again, thanks ,Mark, and everyone.

Thank for using 2carpros.