There is a new article up now on Electronic Returnless Fuel Systems.  Ford's rather complex on demand fuel control system is explained.  Detailed scope captures reveal information about exactly how this system works like only a PicoScope 3423 can.

The article is still being added to and edited so it may evolve a bit more but there is enough there now to give you a very good understanding of the system dynamics and strategy.  After reading this article you will be able to diagnose these systems better.

The article can be accessed from article index on The Creative Lab Scope Technique Page:

http://www.autonerdz.com/clst.htm

Please post any questions or feedback on this article to the Articles feedback section of these forums.

Enjoy