I have a 94 4Runner with the 3.0L.
On warmup the engine surges at idle and if I rev up to 3000rpm it drops 800rpm and runs rough.
Looking at the Haynes manual for checking the air valve it says when the engine is cold the rpm should drop when the idle adjustment screw is turned closed. If the engine is warm the rpm should not change when the idle adjustment screw is closed.
The rpm drops on my engine when its warm - it drops so much it dies.
Where is the air valve on the V6? Is it part of the throttle body? Is there an air valve on the V6?
The illustrations in the Haynes manual only shows the 22RE air valve.