Special tools are required to properly measure tension
and to restore belt tension to factory specifications. Also,
check belt routing to make sure there is no interference
between the belts and other engine components.
Spark Plugs
Spark plugs must fire properly to assure engine perfor-
mance and emission control. New spark plugs should be
installed at the specified mileage. The entire set should be
replaced if there is any malfunction due to a faulty spark
plug. Refer to the “Vehicle Emission Control Informa-
tion” label in the engine compartment for spark plug
information.
Catalytic Converter
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
converter as an emission control device.
Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
CAUTION!
Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. In
the event of engine malfunction, particularly involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
MAINTAINING YOUR VEHICLE
321
7
Summary of Contents for 2005 Grand Cherokee
Page 2: ......
Page 96: ...96 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 97: ...UNDERSTANDING THE FEATURES OF YOUR VEHICLE 97 3 ...
Page 98: ...98 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 162: ...INSTRUMENT PANEL AND INTERIOR CONTROLS 162 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 163: ...INSTRUMENT CLUSTER UNDERSTANDING YOUR INSTRUMENT PANEL 163 4 ...
Page 217: ...Operating Tips UNDERSTANDING YOUR INSTRUMENT PANEL 217 4 ...
Page 221: ...UNDERSTANDING YOUR INSTRUMENT PANEL 221 4 ...
Page 226: ......
Page 262: ...262 STARTING AND OPERATING ...
Page 294: ......
Page 310: ...3 7L ENGINE 310 MAINTAINING YOUR VEHICLE ...
Page 311: ...4 7L ENGINE MAINTAINING YOUR VEHICLE 311 7 ...
Page 312: ...5 7L ENGINE 312 MAINTAINING YOUR VEHICLE ...
Page 360: ......
Page 382: ......
Page 387: ...U S ONLY IF YOU NEED CONSUMER ASSISTANCE 387 9 ...
Page 391: ...INDEX 10 ...