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Fuel consumption, Fuel and refueling – FORD 2013 Escape v.2 User Manual

Page 149

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If the vehicle’s engine or transmission has
just been serviced, or the battery has
recently run down or been replaced, the
OBD-II system may indicate that the
vehicle is not ready for I/M testing. To
determine if the vehicle is ready for I/M
testing, turn the ignition key to the on
position for 15 seconds without cranking
the engine. If the service engine soon
indicator blinks eight times, it means that
the vehicle is not ready for I/M testing; if
the service engine soon indicator stays on
solid, it means that the vehicle is ready for
I/M testing.

The OBD-II system is designed to check
the emission control system during normal
driving. A complete check may take several
days. If the vehicle is not ready for I/M
testing, the following driving cycle
consisting of mixed city and highway
driving may be performed:

15 minutes of steady driving on an
expressway/highway followed by 20
minutes of stop-and-go driving with at
least four 30-second idle periods.

Allow the vehicle to sit for at least eight
hours without starting the engine. Then,
start the engine and complete the above
driving cycle. The engine must warm up to
its normal operating temperature. Once
started, do not turn off the engine until the
above driving cycle is complete. If the
vehicle is still not ready for I/M testing, the
above driving cycle will have to be
repeated.

FUEL CONSUMPTION

Note: The amount of usable fuel in the
empty reserve varies and should not be
relied upon to increase driving range. When
refueling your vehicle after the fuel gauge
indicates empty, you might not be able to
refuel the full amount of the advertised
capacity of the fuel tank due to the empty
reserve still present in the tank.

Empty reserve is the amount of fuel
remaining in the tank after the fuel gauge
indicates empty. Do not rely on this fuel for
driving. The usable capacity of the fuel
tank is the amount of fuel that can be put
into the tank after the gauge indicates
empty. The advertised capacity is the total
fuel tank size – it is the combined usable
capacity plus the empty reserve.

Filling the Tank

For consistent results when filling the fuel
tank:

Turn the ignition off before fueling; an
inaccurate reading results if the engine
is left running.

Use the same fill rate
(low-medium-high) each time the tank
is filled.

Allow no more than two automatic
click-offs when filling.

Results are most accurate when the filling
method is consistent.

Calculating Fuel Economy

Do not measure fuel economy during the
first 1000 miles (1600 kilometers) of
driving (this is your engine’s break-in
period); a more accurate measurement is
obtained after 2000 miles - 3000 miles
(3200 kilometers - 4800 kilometers). Also,
fuel expense, frequency of fill ups or fuel
gauge readings are not accurate ways to
measure fuel economy.

1.

Fill the fuel tank completely and record
the initial odometer reading.

2. Each time you fill the tank, record the

amount of fuel added.

3. After at least three to five tank fill ups,

fill the fuel tank and record the current
odometer reading.

4. Subtract your initial odometer reading

from the current odometer reading.

146

Fuel and Refueling