I just finished installing the 1999 Tacoma 3.4 engine I'm the 96 4 runner and it won't start. It has spark and fuel but I'm thinking something electrical is different? Possibly a sensor? If you guys have any ideas please let me know I'm at a brick wall on this project.

On the 2 wire diagrams I noticed this but would this make that much of a difference ? Also seemed like the firing order is the same