Thanks Art for this information.

I did take a LONG look at reading material. You are right there is a lot of sorting to do in that article.

I notice you said he could rest the retard memory of the adaptive driving feature on the 93. That could be what's happening but figuring out what has pushed it into that memory zone is still the puzzle. Like you said it could be carbon or the timing belt is off.
I even read that the throttle switch not closing to idle mode will make the ICU keep retarding as if it was under the driving mode all the time.
That's a new twist for me to learn but then I do not have a 93 to sense an engine doing that even if my 91 could do it.

The diagrams have helped me spot the number two terminal as the one the ECT is communicating to the ECU on! That will help on some other posts too. I could not remember that, the other day.

It was really entertaining to see the described layout of flywheels. All using the CPS with holes and tooth variations for timing even numbered cylindered engines.

Makes sense that the French had their own ways of making it the hard way. 18.8 degrees throughout, all the way into the electronic factoring process.
There is not that much difference in the resolution at the bottom line. One-third degree versus three-eighths degree.
One might need a degree in electronics to build the circuit though.

Bendix of France, who else would have thunk that one up and got away with it? It's no wonder to why obsolete items and crap in up in round piles!
Still got to thank them for the fragrances that our ladies wear!

I will store that book in my favorites listing.

Thank Phil