flex fuel sensor

[dgriffinhere]

is there such a thing as a flex fuel comp. sensor BYPASS? THANKS!!!

 

[ygmn]

I would think not on first gen 2002-2006 since Flex Fuel was not a thing until 2nd gen 2007-2013 which were touted as FLEX FUEL TRUCKS

But pretty sure on 2nd gen they have a sensor to detect what type of fuel. Not sure how it works.

 

[Raekal]

Im pretty sure the engines and fuel systems are sealed up to resist the alcohol and then the ECM adjusts for the differences in fuel based on performance metrics. Edit: I stand corrected: there is also a specialized pass-though sensor in-line that detects alcohol percentage on the fly and adds the info into the tune.


This is similar to the basic knock sensors on all engines. If it senses knock, it changes the timing to counter it. If the O2 sensors detect that the mixture is running lean, it can command more fuel or alter the throttle position.

Any engine can be converted and tuned to run E85+ if you want, its just a matter of what you want to do and the parts you have installed. Usually folks going down that path are going for high performance and wind up putting larger injectors in the engine for example. There's no real benefit otherwise. E85 doesn't make the most sense a fuel overall. You burn away any cost savings due to the lower energy content.

 

[ygmn]

No there is sensor for fuel type on FLEX vehicles...

 

[ARTC]

12570260 SENSOR ON 2005