A couple more pieces of data if it matters to help troubleshoot this.

At idle, the economy gauge indicated minimal fuel flow and it reacts as expected when the engine is accelerated in Park or Neutral.

When driving, I noticed that the needle was pegged out in the red, then it would stall and quit. After I stopped, put in in Park it would start right up and idle smoothly.

Aside from the fuel lines and distribution unit, would the EHA or ICV cause problems like this?

Dan