Most new compressors come with a sheet that says how much oil they are precharged with. Did your new compressor come with that?

One of the things I learned on here is you have to be a little more specific than you think you are being. Are you asking about how much oil in the A/C system (Condenser, evaporator, receiver/drier and compressor) total, or just the compressor? If just the compressor, I agree with with most on here to fill it to a minimum of what came in it, but not to exceed 6-8oz total in the system. If you follow the charts I posted that gives you about 100-120cc in the compressor, and is what mine came loaded with. -With that and the other amounts it came to 7oz. The documents I got from DENSO, with the compressor, did not specifically state an amount, only to ensure I put the correct amount in the compressor and that I replaced the receiver drier or it would void any warranty.

The other part that confused me on here is when someone only replaced the compressor, vice the other components. Not sure why you would do that, since a bad compressor typically puts bad things into the rest of the system (rcv/drier, evap, cond and lines), but apparently some do and had success. If I am replacing the compressor then I am replacing everything and flushing all the lines, but I am more of a fail safe guy (32 yrs of submarines). If you are just replacing the compressor then you would measure the amount of oil that came out of the compressor and refill that amount, since, in theory, the system still has the remaining amount in it and you do not want to over fill it. If you are doing the complete replacement and flushing all the lines (I recommend if your compressor failed), which I did, so I used the Toyota FSM and the articles (there are multiple articles in that link on AC system component replacement) and charts I posted.

Here is the link to an article on here that contains a link to the FSM it is post #39. I had to download it to my desktop and then open in Acrobat to do a search for AC, Compressor, receiver, evaporator, refrigerant, to find what I needed. It is not very user friendly and takes some time but I was able to find almost everything to validate what I did. The AC section starts on pg 1767 and covers troubleshooting and repair and replacement of the various components. The fluid levels and torque specs are a bit of a treasure hunt using the word search function in ADOBE. -Good Luck and keep us posted on how everything turns out.

OOPS: forgot the link to the FSM post:

Download 1996-2002 Service repair manual here!

This new compressor is a Denso, and it did not say how much it came prefilled with, but I was able to drain out 80cc

Thanks for the good ideas from both of you! I don't know why, but I'm not getting email notifications for this thread.

I really appreciate the help. I've actually got a hard copy of the FSM, and it is frustratingly undetailed about ac system oil. It tells how much to put into the drier, evap, and condenser, but not the compressor. I have looked at the adventure taco post and it seems to agree with everything else I've read.

My clutch went bad on the compressor so the pulley seized. Would that be enough to damage the internals and contaminate the whole system? The old compressor still turns by hand just fine (just not the pulley).

Right not my plan is to put 110cc (~3.7 oz) in the compressor, 45cc (~1.5oz) into the new condenser, 20cc (~.7 oz) into the new drier. That should be 175cc or 5.9 oz of oil into the system.

I am also going to pull and inspect the evaporator, as they get grungy and I haven't had it out in 9 years. I can try to drain the oil out of it and replace whatever comes out. I have thought about replacing it as well, since I consider AC critical here, but it is also $300. Thoughts?

If it was my vehicle, I would go ahead and replace the evaporator since you have replaced most of the other ac components.

So I did wind up replacing the evaporator, which was good since the old one was pretty grody, and I think it was leaking around the expansion valve (also replaced). I got the system recharged today, and the compressor wouldn't engage. Turns out when your AC clutch goes out, it will blow the corresponding fuse, which is good to know.

Anyways the AC now works, but it's not as cold as it used to be. The ambient temperature when I measured today was 101*F, and the temp at the center vent was 68*. That's at idle in my driveway, which is a hell of a lot better than nothing, but it used to be low 50's high 40's. My moms highlander was putting out 51* when checked right next to the 4runner.

All said and done I added about 7oz of oil to the system replacing the compressor, evap, condenser, and drier. Too much? Anyone got any ideas how I can make it colder?

I did check for leaks, and there's no bubbles in the sight glass, and nothing showing up with the UV light. I think my manifold is leaking so I'm a little hesitant to hook it up, but I probably should hook up a manifold and see the pressures.

Do yo have access to ac manifold set with gauges? If you do check your pressures at 1500 rpm. Low side should be 20-35 psi and high side should be 200-230 psi. Those are for ambient temps at 86-95 *F so if you're above that then your readings will likely be higher. Also ac on, temp set as cold as possible, fan on high, recirculate on, and all vents open.

I have the same question, but are you taking about suction and discharge hose where they bolt onto the manifold is 7 ft lbs? I need manifold to compressor specs. Anyone?
99 2wd 3RZ with 10Pa17c compressor