Replacing A/C Condenser, How Do I Know if Compressor Needs Replacing?

I would try unplugging the pressure switch (located on the ac line on the passenger side near the firewall) and jumping the connector terminals (on the harness side) to each other and see if the compressor will engage then.
 
Before hotwiring the compressor make sure your "service line" protocols have been followed based on the type of gauges and shraeder valve connectors you are using. After disconnecting the vacuum pump from the service line and waiting whatever time you choose for leak testing, make sure to purge the "service" line once the engine is running and the refrigerant is hooked up to the service line and opened, ac switch is on, doors open and blower set to max and recirculate and you are ready to open the low side. It took mine a good 3-5 mins to pull in enough refrigerant to start the compressor. Good luck.
 
Once the refrigerant escaped, the compressor will not run so you don't have to worry about it pumping out any more oil if you push the A/C button.
Compressor should be fine.

When you replace the condenser you are supposed to add 1.4-1.7 oz of oil.
When you replace the dryer add .71 oz of oil.

This is for a 2000.

I know this is an old thread, but I hope you are still around. Where did you get these specifications in terms of the amount of oil to add? I am replacing a condenser on a 2008 4Runner, and have all the factory service manuals and there is no information about oil volume to add when you are replacing any AC component. Very curious as to where I could find this information. Thanks in advance!
 
I know this is an old thread, but I hope you are still around. Where did you get these specifications in terms of the amount of oil to add? I am replacing a condenser on a 2008 4Runner, and have all the factory service manuals and there is no information about oil volume to add when you are replacing any AC component. Very curious as to where I could find this information. Thanks in advance!
I got the info from the factory service manual.
 
it's both in the preparation chapter, and in the AC chapter under each component's instruction for removal / installation. It's pretty obvious if you read all the procedure for each component of the AC
 
It is definitely not in the AC section. The only information it has for replacing the compressor is to use the AC oil to lube replacement o-rings for the hose fittings, but that's the only mention they have for the oil. I read every single page. I can even take a picture and show you. Mind you, I have a 2008, so the service manuals may have dropped this, who knows. I can look for a preparation chapter too. There are about five books total. Is the preparation chapter in the same book as the AC section, or somewhere else?
 
It is definitely not in the AC section. The only information it has for replacing the compressor is to use the AC oil to lube replacement o-rings for the hose fittings, but that's the only mention they have for the oil. I read every single page. I can even take a picture and show you. Mind you, I have a 2008, so the service manuals may have dropped this, who knows. I can look for a preparation chapter too. There are about five books total. Is the preparation chapter in the same book as the AC section, or somewhere else?
Maybe try posting in the 4th gen section of this site.
It doesn't matter where it's listed for a 3rd gen if you have a 2008.
 
I would try unplugging the pressure switch (located on the ac line on the passenger side near the firewall) and jumping the connector terminals (on the harness side) to each other and see if the compressor will engage then.
This is what I did to verify my compressor was working.
 
Maybe try posting in the 4th gen section of this site.
It doesn't matter where it's listed for a 3rd gen if you have a 2008.

Ok, so I did a bunch of research and basically came up with an estimate rule of thumb that when you replace a condenser, you add an ounce, and then a half ounce to compensate for any other loss during the leak, and for the loss during the vacuum process. So, the OEM condenser I bought from Toyota came with a can of lubricant, and guess what? It was exactly 1.5oz. So after all my time researching and pulling my hair out, Toyota already figured it out, they just didn't have any explanation as to why the lube was there, or how much to use.
 

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