woohoo! now my black 3rz swapped 85 4runner has functioning AC again.
it always worked with the 22re, and worked WELL, so I knew I WOULD have it again.
it took a bit of figuring, but I finally got it.
obviously I had to have custom AC hoses made, but I found a part from a different car made that job easier.
I used the highside(small) hose from a 99 Subaru legacy. lol. they are the same connection at the compressor, but the Subaru hose has the charge port very near the compressor. the Tacoma hose does NOT have a charge port in the line anywhere, it is elsewhere in the system, still on the Tacoma.
so using that end of the Subaru hose, I was able to have a custom line built with the other end of the stock 4runner hose.
for the low side I used the Tacoma hose, grafted onto the stock 4runner hose. which works out nicely, because that one DOES have the charge port in place.
the wiring got a little tricky, but mostly because my 4runner did not match ANY of the wiring diagrams I found. the wire colors were wrong. the wires coming out of the AC amplifier didn't match, and the diagram did NOT show a pinout location. the amplifier is necessary for the system to function properly, with the temperature and safety switches.
also, I discovered that the amplifier MUST see a tach signal, or it will not release the clutch output.
so, for my reference,
out of the amplifier,
black/yellow is the clutch output, it traces down into the kick panel as a black/white. this is the ac clutch wire.
the black wire gets the tach signal, pin#13 on E6 of the 3rz ecu.
then, to get the system to idle up properly, you need to connect pin #13 of the E5 connector to the blue wire(idle up VSV) in the amplifier, it also comes down into the kick panel, in the same connector with the black/white clutch wire.
sorry...again, not a single pic was taken. im so bad at this...