I am going to change the variable valve timing (VVT) solenoid/actuator for the Bank 1 side of the engine (Left side when standing in front of the truck looking at the engine). Hopefully this will keep the check engine light from coming back on. I work down the street from a Toyota dealer so ill stop by the parts shop and hope they have one in stock.
looks like its only a 10mm bolt holding it on and a not-so-quick disconnect electrical harness.
Part# 153300S010
More Information for GATES VVS130
I will also change the motor oil. Don't have time until the weekend.