I have my '95 940 w/165K miles in a friend's shop.  He is trying to figure
out a problem with fuel indication.

I recently had the fuel qty. sending unit replaced with new one after the
old one died.  Now, it indicates empty, complete with the orange warning
light even though it has about four to five gallons left in the tank. The
old sending unit never used to do this until I had about one gallon left in
the tank which I figured was about normal.  I don't have the owner's manual
handy at the moment since it is with the car in the shop, but I imagine it
mentions how much fuel should be left when the warning light comes on.  Does
anyone know?

Also, though probably not related, the car "runs out of gas" and won't start
while it is parked in my driveway, which is inclined downwards, even though
it has four or five gallons in the tank.  My mechanic friend points out that
the pump is located at the very end (I can't remember if it is the forward
or the rear end of the tank), but it still can't scavenge the remaining fuel
in the sump unless the car is more level.  My remedy is to add a gallon of
gas so that the car starts, even though there is plenty left (4 or 5 gal).
It never used to do this until I had the sending unit replaced.

Anyone have an idea what is going on here?

Thanks,
Bob