Ford 1997 Aerostar Manual page 20

Fuel Gauge
The fuel gauge displays approximately how
much fuel is in the fuel tank only when the
ignition switch is ON.
For a proper fuel gauge indication after adding
fuel, the ignition switch should be in the OFF
position while the vehicle is being refueled.
The fuel gauge indicator may vary slightly while
the vehicle is in motion. This is the result of fuel
movement within the tank. An accurate reading
may be obtained with the vehicle on smooth,
level ground.
Fuel gauge
Engine Coolant Temperature Gauge
This gauge indicates the temperature of the
engine coolant, not the coolant level. If the
coolant is not at its proper level or mixture, the
gauge indication will not be accurate.
The pointer moves from the C (cold) mark into
the NORMAL band as the engine coolant warms
up. It is acceptable for the pointer to fluctuate
within the NORMAL band under normal driving
conditions. Under certain driving conditions,
such as heavy stop and go traffic or driving up
hills in hot weather, the pointer may move to
the top of the NORMAL band.
If, under any circumstances, the pointer moves
above the NORMAL band, the engine is
overheating and continued operation may cause
engine damage.
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