2015 FORD F450 ignition

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Page 139 of 485

FORD F450 2015  Owners Manual STARTING A GASOLINE
ENGINE
When you start the engine, the idle speed
increases, this helps to warm up the
engine. If the engine idle speed does not
slow down automatically, have your
vehicle checked b

Page 144 of 485

FORD F450 2015  Owners Manual We recommend regular unleaded gasoline
with a pump (R+M)/2 octane rating of 87.
Some stations offer fuels posted as regular
with an octane rating below 87, particularly
in high altitude areas. We do n

Page 146 of 485

FORD F450 2015  Owners Manual If the fuel cap light remains on, at the next
opportunity, safely pull off of the road,
remove the fuel filler cap, align the cap
properly and reinstall it. The check fuel cap
light or Check fuel cap

Page 147 of 485

FORD F450 2015  Owners Manual Conditions
•
Heavily loading a vehicle or towing a
trailer may reduce fuel economy at any
speed.
• Carrying unnecessary weight may
reduce fuel economy (approximately
1 mpg [0.4 km/L] is lost for e

Page 149 of 485

FORD F450 2015  Owners Manual 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.

Page 150 of 485

FORD F450 2015  Owners Manual AUTOMATIC TRANSMISSION
WARNING
Always set the parking brake fully
and make sure the gearshift is
latched in park (P). Turn the ignition
to the off position and remove the key
whenever you leave your v

Page 154 of 485

FORD F450 2015  Owners Manual In order to prevent the engine from running
at too low an RPM, which may cause it to
stall, SelectShift still automatically makes
some downshifts if it has determined that
you have not downshifted in

Page 158 of 485

FORD F450 2015  Owners Manual Shifting between system modes
Note:
Do not perform these operations if
the rear wheels are slipping.
Note: Some noise may be heard as the 4x4
system shifts or engages. This is normal. In
order to redu