Recently my flex fuel gauge has been playing up, it was working for an entire year previous to this.
The only thing I can think of that may have caused it was I was driving around looking for e85 and may have run the tank all the way to the bottom line of the petrol gauge before I filled up.
Lately 5 sec after start up there is some hesitation of a second and also randomly there is like a brief timing pull? (not sure but it burbles and pops a little and hesitates).
I also thought it could be dirty fuel, but I refilled half the tank with some premium 98ron from Shell (best available petrol in OZ) but it still has the same issue.
So basically when the car is idling it reads the flex fine:
But then when the car revs (past around 2k rpm), it doesn't show anymore:
When the revs drop and it *resets* it goes like this:
Before eventually reading the ethanol content again
Has anyone else encountered this before?