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[jim x 3]

AZ,

Thanks for asking. I'm really looking for some background info so I can solve other problems in the future as well. Thus my rant about service info and diagrams.

Right now, the fuel tank problem(s) symptoms are:

* Gauge reads well over full when tank is just full
* Gauge declines as fuel is used, but swings wildly, particularly at certain fuel levels
* Sometimes gauge drops very quickly to less than empty
* Engine dies at 1/4 tank, particularly when fuel is sloshing
* Both tanks have the same symptoms

I have searched and found a couple of posts referencing a "flapper" on the in-tank fuel pickup. I'd like to verify correct action of the chassis wiring and instrument panel before I start dropping the fuel tanks to check the pickups and sending units.

Thanks,