Jeep 2006 Commander User Manual Page 358

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To minimize the possibility of catalytic converter damage:
Do not shut off the engine or interrupt the ignition
when the transmission is in gear and the vehicle is in
motion.
Do not try to start the engine by pushing or towing the
vehicle.
Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing.
Do not idle the engine for prolonged periods during
very rough idle or malfunctioning operating condi-
tions.
Do not allow vehicle to run out of fuel.
NOTE: Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
Crankcase Emission Control System
Proper operation of this system depends on freedom
from sticking or plugging due to deposits. As vehicle
mileage builds up, the PCV valve and passages may
accumulate deposits. If a valve is not working properly,
replace it with a new valve. DO NOT ATTEMPT TO
CLEAN THE OLD PCV VALVE!
Check ventilation hose for indication of damage or
plugging deposits. Replace if necessary.
Air Cleaner Filter
Under normal driving conditions, replace the air filter at
the intervals shown on “Maintenance Schedule A.” If,
however, you drive the vehicle frequently under dusty or
severe conditions, the filter element should be inspected
periodically and replaced if necessary at the intervals
shown on “Maintenance Schedule B.”
358 MAINTAINING YOUR VEHICLE
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