I'm not sure I found the ICP sensor, but I didn't find any wires that looked like they had been jumpered or spliced.

I took the truck to AutoZone to get them to read the codes for me. They got no reading at all. They said I had a loose wire in my connector, but it looks good to me.

The truck is definitely running a little funny. It wants to downshift for little baby hills, and it seems to shake a little. I'm taking it to the dealer on Friday.

I took another look at Ford's statement on bio

https://www.fleet.ford.com/showroom/...Technology.asp

and most of their concerns are things that might cause problems with long-term usage. I didn't see any suggestion that B20 might kill an engine overnight.


Earlier this summer, I had a couple of incidents of the Engine light coming on briefly, and then going out. It's possible that I had something ready to die and it finally did. The timing of it dying right after I filled with B20 might be a coincidence.