Looks like your diving onto the gas tank. Doubt the idle actuator. Never really seen those things fail. Did you do a fuel pressure test? Test it, leave it hooked up and see if it looses pressure over an hour or so.guess what? Just hours after posting this, I was driving across town and when I came to one traffic stop the engine suddenly decides to drop below normal idle rpm a couple times. May have dropped to about 500 before picking back up and dropping back down. I didn’t want the engine to shut off so I gave it some throttle and the issue went off completely. What was that??
Possible failing idle actuator?
What would be the biggest indicator if I have a failing, but functional fuel pump? It’s definitely 10+ years old. I think it’s time for replacement anyway?
What was the level of your fuel at the time?
I am thinking fuel pump and tank issues.