It will be the senders. About fifteen years ago I changed my F150 to
run on lpg. Noone warned me of the need to keep the petrol tanks full
and to exercise the senders. Things stated to go wrong about five years
ago and I found that the senders and the tanks had composted. One tank
was a write-off. With lpg (liquid petroleum gas which costs half as
much as petrol (this is Australia)) one petrol tank is sufficient.
It is not a big job to check the senders - they are fairly fragile
things and yours are geriatric!
Got the same kind of problem here. Fill the tanks, they show full. Get down
to about half a tank, they bounce from full to empty till it is between 1/4
and empty. Then lays there on empty. At first it was just the back one, but
now both do it. Have to check the gas my the odometer...although I have
learned to carry an extra gallon of gas in a gas can...it can be a long walk
to the next phone...
> It will be the senders. About fifteen years ago I changed my F150 to
> run on lpg. Noone warned me of the need to keep the petrol tanks full
[quoted text clipped - 5 lines]
> It is not a big job to check the senders - they are fairly fragile
> things and yours are geriatric!