What do you guys make of this new issue?

So I am going for a nice drive today, and I check my factory fuel gage before I took off, and near three quarters of a tank..

I look at while driving, its at dead zero.

I get home and when I stop in my drive way (car not moving at all) it starts to climb back up to near three quarters.. so I go for another little drive and as soon as I start moving, my gage goes back down to empty..

I just checked behind the dash, all the wires are connected and snug..


any ideas??

thanks

shane