After Starting; Normal Starting — Diesel Engines - Jeep Grand Cherokee Owner's Manual

If the engine fails to start after you have fol-
lowed the "Normal Starting" or "Extreme Cold
Weather" procedures, it may be flooded. To
clear any excess fuel, push the accelerator
pedal all the way to the floor and hold it. Then,
turn the ignition switch to the START position
and release it as soon as the starter engages.
The starter motor will disengage automatically
in 10 seconds. Once this occurs, release the
accelerator pedal, turn the ignition switch to the
LOCK position, wait 10 to 15 seconds, then
repeat the "Normal Starting" procedure.
CAUTION!
To prevent damage to the starter, wait 10 to
15 seconds before trying again.

After Starting

The idle speed is controlled automatically, and
it will decrease as the engine warms up.
Normal Starting — Diesel Engines
Observe the following when the engine is op-
erating.
• All message center lights are off.
• Malfunction Indicator Light (MIL) is off.
142
• Low Oil Pressure Light is off.
Cold Weather Precautions
Operation in ambient temperature below 32°F
(0°C) may require special considerations. The
following chart suggests these options.
*No. 1 Ultra Low Sulfur Diesel Fuel (ULSD)
should only be used where extended arctic
conditions (-10°F/-23°C) exist.
NOTE:
• Use of Climatized ULSD Diesel Fuel or
Number 1 ULSD Diesel Fuel results in a
noticeable decrease in fuel economy.
• Climatized ULSD Diesel Fuel is a blend of
Number 2 ULSD and Number 1 ULSD
Diesel Fuels, which reduces the tempera-
ture at which wax crystals form in fuel.
NOTE:
This engine requires the use of "Ultra Low
Sulfur Diesel Fuel." Use of incorrect fuel
could result in exhaust system damage. Re-
fer to "Fuel Requirements" in this section
for further details on fuel recommendations.
Battery Blanket Usage
A battery loses 60% of its cranking power as
the battery temperature decreases to 0°F
(-18°C). For the same decrease in temperature,
the engine requires twice as much power to
crank at the same RPM. The use of battery
blankets will greatly increase starting capability
at low temperatures. Suitable battery blankets
are available from your authorized MOPAR
dealer.
Engine Starting Procedure
WARNING!
NEVER pour fuel or other flammable liquid
into the air inlet opening in an attempt to start
the vehicle. This could result in a flash fire
causing serious personal injury.