Wow super informational thread. I have an 81 FJ40 that the carb fan just quit working, Idle solenoid quit some time ago...now wired with direct ground. I'm getting ready to reflow solder on my computer to hopefully fix those issues. As an expert, any advice? Things to look for, potential problems, etc. Thanks in advance.
The carb fan is controlled by its own controller, I think mounted behind the air duct for your truck. The 81+ emission computers are pretty reliable, I would replace the electrolytic caps and reflow the solder for the connector. @ToyotaMatt sells fuel cut solenoids. The fan controllers are another story.