2004 JEEP WRANGLER spark plugs replace

Miles 84,000 90,000 96,000 102, 000
(Kilometers) (134 000) (144 000) (154 000) (163 000)
[Months] [84] [90] [96] [102]
Change the engine oil and engine oil filter. X X X X
Inspect the engine air filter element, and replace if nec-
essary.X
Inspect the PCV Valve, and replace if necessary.LX
Replace the spark plugs.X
Lubricate the steering linkage joints and outer tie rod
ends.XXXX
Lubricate the steering and suspension ball joints. X X
Inspect the brake linings. X
Inspect the drive belt, and replace as needed. Not re-
quired if previously replaced.XX
Flush and replace the engine coolant if not done at 60
months.X
Inspect the transfer case fluid. X
SCHEDULE ªAº 277
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

Miles 108,000 114,000 120,000
(Kilometers) (173 000) (182 000) (192 000)
[Months] [108] [114] [120]
Change the engine oil and engine oil filter. X X X
Inspect the engine air filter element, and replace if necessary.X
Replace the ignition cables (2.4L Only).X
Inspect the PCV Valve, and replace if necessary.LX
Replace the spark plugs.X
Lubricate the steering linkage joints and outer tie rod ends. X X X
Lubricate the steering and suspension ball joints. X X
Inspect the brake linings. X
Replace the timing belt (2.4L Only). X
Inspect the drive belt, and replace as needed. Not required if pre-
viously replaced.X
Drain and refill the transfer case fluid. X
Inspection and service should also be performed anytime
a malfunction is observed or suspected. Retain all re-
ceipts.LThis maintenance is recommended by the manufac-
turer to the owner, but is not required to maintain
emissions warranty.
278 SCHEDULE ªAº
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

Sentry Key............................ 12
Sentry Key Programming.................. 13
Sentry Key Replacement.................. 13
Service Assistance...................... 280
Service Contract........................ 282
Service Manuals........................ 285
Setting the Clock....................... 120
Shift Indicator Light..................... 117
Shift Speeds, Manual Transmission.......... 164
Shifting.............................. 163
Automatic Transmission................ 165
Manual Transmission.................. 163
Shoulder Belt Upper Anchorage............. 21
Shoulder Belts.......................... 17
Signals, Turn........................58,116
Snow Chains.......................... 196
Snow Plow........................... 205
Soft Top............................... 82
Spare Tire............................ 213
Spark Plugs........................... 232
Specifications
Fuel............................... 197
Oil ................................ 230Speed Control.......................... 60
Speedometer.......................... 117
Starting.............................. 160
Automatic Transmission................ 160
Emergency (Jump Starting).............. 216
Engine Block Heater................... 162
Engine Fails to Start................... 161
Manual Transmission.................. 160
Starting Procedures..................... 160
Steering
Power............................. 236
Tilt Column.......................... 60
Wheel Lock.......................... 14
Wheel, Tilt........................... 60
Storage............................65,256
Storage, Vehicle........................ 256
Storing Your Vehicle..................... 256
Supplemental Restraint System - Airbag....... 22
Tachometer........................... 116
Temperature Gauge, Engine Coolant......... 118
Tether Anchor, Child Restraint.............. 33
Tilt Steering Column..................... 60
INDEX 297
10