System pressure will run abnormally high, the AC system will vibrate, and you won't get proper cooling.
Can be added with refrigerant check can contents
There will be a sticker somewhere in the engine compartment that tells you how much to add. It is usually 8 oz with no other oil in the system. Be careful to ensure that your system is purged prior to reinserting. I added too much to my truck and now have to have the system purged to get the system balanced out. AC systems work on a very exacting amount of oil to freon ratio. Too much oil of not enough is not good for the system. Too much oil and the freon does not flash from a gas to a liquid properly, not enough oil and the compressor lifespan is shortened.
changing ac compressor only, how much oil do i add 2.7 Toyota tacoma 1999.... 6 ounces
The AC system will vibrate, and pressure throughout the system will be extremely high.
Under the hood, on the passenger side, just next to the firewall is a silver can-looking thing that has AC lines running in and out. The can, called a 'receiver/dryer' may, or may not, be wrapped in black foam. The AC line coming out of the receiver/dryer has the low pressure side port, that's where you add refrigerant and/or oil. Don't add oil unless you KNOW that it's low. Too much refrigerant oil can destroy the AC system.
FYI most refrigerants already have oil that is proportionate to the amount of refrigerant in the can. If you are using straight refrigerant and all you need is to add oil to your system, then there is product out there that is straight oil that can be added to the low side port in your ac system. IDQ , QUEST , and AC PRO are some companies out there that have many of these products. You can also find them in the web at www.idqusa.com along with helpfull information about your vehicles ac system.
Ac oil helps to keep the gaskets in the ac system from drying out. The oil can be added separately or can be bought mixed into Freon from the store. Most importantly the oil lubricates the ac compressor, the only moving part in the ac system.
how much ac oil do i put in my ac copressor
To properly add refrigerant to an AC system, you need to first locate the low-pressure port on the system. Then, attach a refrigerant gauge and hose to the port. Start the AC system and slowly add refrigerant until the pressure reaches the recommended level. Be careful not to overfill the system.
If the system is bone dry, aprox 8 oz.
Is it just the compressor, or do other parts of the system rattle as well? If so, then you have either an overcharged system, or too much oil in the system.
If you have replaced the compressor only, I would add 3 oz directly to suction port of compressor then rotate the comp by hand a few revolutions. If you have not replaced any major part of the system, very little oil, if any would be added.