I have an 05 GT auto with a JlT and 93 octane tune from Doug. I ran my car kind of hard as a demo to a friend. After parking the car and letting it sit for about one hour, it restarted in failsafe mode. I cleared the code but the car will not start at all. I got a 1091 or 0191 code. I can't remember which one although I couldn't find 1091 on the code list. My car is about 30 miles from my house. I really need help.

 

Try reinstalling the factory tune. If you can't, then try unhooking the battery for 5 minutes or so.

 

I did all of the above. My car still didn't start. I had to have it towed to a dealer. I hope they don't give me any problem about the Flows.

 

I assume this is you: http://www.modularfords.com/forums/2...art-52762.html