1998 MITSUBISHI MONTERO spark plugs

CLUTCH PEDAL POSITION SWITCHES
COLD START INJECTORS
CONNECTORS
COOLANT
COOLANT RECOVERY TANKS
COOLING FAN MOTOR MODULES
COOLING FAN MOTOR RELAYS AND MODULES
COOLING FAN MOTOR RESISTORS
COOLING FAN MOTOR SENSORS AND SWITCHES
COOLING FAN MOTOR SWITCHES
COOLING FAN MOTORS
CRANKSHAFT POSITION SENSORS
DECEL VALVES
DEFLECTORS
DIP STICKS AND TUBES
DIP STICK TUBES
DISTRIBUTOR ADVANCES AND RETARDERS (MECHANICAL AND VACUUM)
DISTRIBUTOR BOOTS AND SHIELDS
DISTRIBUTOR CAPS
DISTRIBUTOR RETARDERS (MECHANICAL AND VACUUM)
DISTRIBUTOR ROTORS
DISTRIBUTOR SHIELDS
DISTRIBUTORS
EARLY FUEL EVAPORATION VALVES (HEAT RISER ASSEMBLIES)
EGR COOLERS
EGR EXHAUST MANIFOLD PASSAGES
EGR INTAKE AND EXHAUST MANIFOLD PASSAGES
EGR PLATES AND COOLERS
ELECTRONIC SPARK CONTROL MODULES
ELECTRONIC TRANSMISSION CONTROL DEVICES
ELECTRONIC TRANSMISSION FEEDBACK DEVICES
ENGINE COOLANT TEMPERATURE SENSORS
ENGINE COOLING SYSTEMS
ENGINE COVERS (OIL PAN, VALVE COVER, TIMING COVER)
ENGINE OIL
ENGINE OIL CANISTERS
ENGINE OIL COOLERS (EXTERNAL)
ENGINE OIL DRAIN PLUGS AND GASKETS
ENGINE OIL FILTERS AND CANISTERS
ENGINE OIL GASKETS
ENGINE OIL PRESSURE GAUGES (MECHANICAL)
EVAPORATIVE EMISSION (EVAP) CANISTER FILTERS
EVAPORATIVE EMISSION (EVAP) CANISTER PURGE DEVICES
EVAPORATIVE EMISSION (EVAP) CANISTERS
EVAPORATIVE EMISSION (EVAP) FEEDBACK DEVICES
EXHAUST GAS RECIRCULATION DEVICES
EXHAUST GAS RECIRCULATION FEEDBACK DEVICES
EXPANSION PLUGS
FAN CONTROL SENSORS
FUEL
FUEL ACCUMULATORS AND DAMPERS
FUEL AND COLD START INJECTORS
FUEL DAMPERS
FUEL DELIVERY CHECK VALVES
FUEL DISTRIBUTORS (BOSCH CIS)
FUEL FILLER NECKS AND RESTRICTORS
FUEL FILTERS
FUEL INJECTORS
FUEL LEVEL SENDERS7
FUEL PRESSURE REGULATORS
FUEL PUMPS (IN-TANK AND EXTERNAL, ELECTRICAL OR MECHANICAL)
FUEL RAILS
FUEL RESTRICTORS

FUEL TANKS
GAS CAPS
GASKETS
GROMMETS (VALVE COVER)
HARMONIC DAMPERS
HEATER CONTROL VALVES
HEATER CORES
HOSE AND TUBE COUPLERS, CONNECTORS AND CLAMPS
HOSE CLAMPS
HOSE CONNECTORS
HOSE COUPLERS
HOSES AND TUBES (FUEL LINES, RADIATOR, VACUUM, BY PASS,
HEATER, RECOVERY TANK AND OIL COOLERS)
HOUSINGS
IDLE AIR CONTROLS
IDLE SPEED CONTROL ACTUATORS
IGNITION BOOTS
IGNITION COIL TOWERS
IGNITION COILS
IGNITION CONTROL MODULES (ICM)
IGNITION SWITCHES
IGNITION TERMINALS
IGNITION WIRES, BOOTS, COIL TOWERS AND TERMINALS (SECONDARY)
IN-TANK FUEL STRAINERS
INERTIA FUEL SHUT-OFF SWITCHES
INTAKE AIR TEMPERATURE SENSORS
INTAKE MANIFOLDS
INTERCOOLERS
KNOCK SENSORS
LIQUID VAPOR SEPARATORS
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSORS
MASS AIR FLOW (MAF) SENSORS
METAL AIR MANIFOLDS AND PIPES
METAL AIR PIPES
MIX CONTROL SOLENOIDS
MOTOR MOUNTS
O-RINGS, GASKETS, SEALS AND SPRING LOCKS
O2 SENSORS
OIL PRESSURE SENDING UNITS
OIL PUMP PICK-UP SCREENS
OIL PUMPS
PARK NEUTRAL POSITION SWITCHES
PCV BREATHER ELEMENTS
PCV ORIFICES
PCV VALVES
PICK-UP ASSEMBLIES (INCLUDES MAGNETIC, HALL EFFECT AND
OPTICAL)
POWER STEERING PRESSURE SENSORS
POWERTRAIN CONTROL MODULES (PCM) AND PROM
POWERTRAIN CONTROL PROM
PRESSURIZED EXPANSION TANK CAPS
RADIATOR CAPS AND PRESSURIZED EXPANSION TANK CAPS
RADIATOR FAN BLADES
RADIATOR FAN CLUTCHES
RADIATORS
ROLL OVER VALVES
SEALING COMPOUNDS
SEALS
SECONDARY AIR INJECTION SYSTEM MANAGEMENT DEVICES
SENSORS AND ACTUATORS
SHROUDS, BAFFLES AND DEFLECTORS
SPARK PLUGS
SPRING LOCKS

Idle Speed Control Actuator ............................... ISC
Mix Control Solenoid .............................. MC Solenoid
Secondary Air Injection System Management Device .... AIR, PAIR
Vacuum Regulator Solenoid .................................. ..
Waste Gate Control Solenoid ................................ ..









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SHROUDS, BAFFLES AND DEFLECTORS
SHROUD, BAFFLE AND DEFLECTOR INSPECTION








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Condition Code Procedure
Application incorrect,
affecting cooling system
performance ............ A . Require repair or replacement.
Attaching hardware
broken ................. A .. Require repair or replacement
of hardware.
Attaching hardware
missing ................ C ......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A .. Require repair or replacement
of hardware.
Bent, affecting cooling
system performance ..... A . Require repair or replacement.
Blocked, affecting cooling
system performance ..... A . Require repair or replacement.
Broken, affecting cooling
system performance ..... A . Require repair or replacement.
Cracked, affecting cooling
system performance ..... A . Require repair or replacement.
Loose, affecting cooling
system performance ..... A ................ Require repair.
Loose, not affecting
cooling system
performance ............ 2 ................ Suggest repair.
Missing, affecting cooling
system performance ..... C ........... Require replacement.









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SPARK PLUGS
NOTE: You are not required to replace spark plugs in sets.
However, you may suggest replacement of the other plugs
for preventive maintenance.
SPARK PLUG INSPECTION









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Condition Code Procedure
Application incorrect ... B ............ Require replacement.
Electrode eroded ........ 1 ............ Suggest replacement.
Fouled .................. A ........... ( 1) Require repair or
replacement.
Gap incorrect ........... B .. Require repair or replacement.
Insulation broken ....... A ............. Require replacement
Insulator cracked ....... A ............ Require replacement.
Leaking compression ..... A .. Require repair or replacement.
Maintenance interval .... 3 ............ Suggest replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads

F - BASIC TESTING
1998 Mitsubishi Montero
1998 ENGINE PERFORMANCE
Mitsubishi - Basic Diagnostic Procedures
Diamante, Eclipse, Galant, Mirage, Montero, Montero Sport,
3000GT
INTRODUCTION
The following diagnostic steps will help prevent overlooking
a simple problem. This is also where to begin diagnosis for a no-start
condition. The first step in diagnosing any driveability problem is
verifying the customer's complaint with a test drive under the
conditions the problem reportedly occurred.
Before entering self-diagnostics, perform a careful and
complete visual inspection. Most engine control problems result from
mechanical breakdowns, poor electrical connections or
damaged/misrouted vacuum hoses. Before condemning the computerized
system, perform each test listed in this article.
NOTE: Perform all voltage tests with a Digital Volt-Ohmmeter
(DVOM) with a minimum 10-megohm input impedance, unless
stated otherwise in test procedure.
PRELIMINARY INSPECTION & ADJUSTMENTS
VISUAL INSPECTION
Visually inspect all electrical wiring, looking for chafed,
stretched, cut or pinched wiring. Ensure electrical connectors fit
tightly and are not corroded. Ensure vacuum hoses are properly routed
and are not pinched or cut. See M - VACUUM DIAGRAMS article to verify
routing and connections (if necessary). Inspect air induction system
for possible vacuum leaks.
MECHANICAL INSPECTION
Compression
Check engine mechanical condition with a compression gauge,
vacuum gauge, or an engine analyzer. See engine analyzer manual for
specific instructions.
WARNING: DO NOT use ignition switch during compression tests on fuel
injected vehicles. Use a remote starter to crank engine.
Fuel injectors on many models are triggered by ignition
switch during cranking mode, which can create a fire hazard
or contaminate the engine's oiling system.
Check engine compression with engine at normal operating
temperature, all spark plugs removed and throttle wide open. See
COMPRESSION SPECIFICATIONS table.
COMPRESSION SPECIFICATIONS TABLE









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Application (1) Specification
Compression Ratio
1.5L (VIN A) ..................................... 9.0:1
1.8L (VIN C) ..................................... 9.5:1

L - WIRING DIAGRAMS article.
1) Specific self-diagnostic test is not available from
manufacturer at time of publication. Check ignition coil, power
transistor, spark plugs, fuel injectors, heated oxygen sensor,
crankshaft position sensor, and related connectors and harnesses.
2) Also check compression pressure, timing belt, fuel
pressure, and for intake air leaks. See F - BASIC TESTING article.
DTC P0325: KNOCK SENSOR (KS) NO. 1 CIRCUIT FAILURE
NOTE: This test applies to 3000GT equipped with DOHC engine only.
For terminal identification, see TERMINAL IDENTIFICATION. For
circuit and wire color identification, see
L - WIRING DIAGRAMS article.
1) Component or scan tool testing procedure not available
from manufacturer at time of publication. Turn ignition switch to OFF
position. Disconnect KS connector and PCM connector. Ground PCM
connector terminal No. 91. Go to next step.
2) Using DVOM, check for continuity between chassis ground
and KS connector terminal No. 1. If continuity does not exist, repair
wiring harness as necessary. If continuity exists, go to next step.
3) Remove jumper wire from PCM connector terminal No. 1.
Check for continuity between chassis ground and KS connector terminal
No. 2. If continuity does not exist, repair wiring harness as
necessary. If continuity exists, go to next step.
4) Test is complete. Intermittent problem may exist. Road
test vehicle (if necessary) and attempt to duplicate conditions that
caused original complaint. Recheck for DTCs. If no DTCs are displayed,
go to INTERMITTENT DTCS .
DTC P0335: CRANKSHAFT POSITION (CKP) SENSOR CIRCUIT FAILURE
NOTE: For terminal identification, see TERMINAL IDENTIFICATION. For
circuit and wire color identification, see
L - WIRING DIAGRAMS article.
NOTE: Procedures are provided by manufacturer for component
testing using an engine analyzer with oscilloscope
capability. Refer to manufacturer's operation manual for
instructions in use of oscilloscope.
1) If using scan tool, go to step 3). Disconnect CKP sensor
connector. Install Test Harness (MB991348) between CKP sensor and
connector. Using engine analyzer with oscilloscope capability, connect
special patterns probe to CKP sensor connector terminal No. 2. Go to
next step.
2) Start engine. Compare oscilloscope wave pattern with
known-good wave pattern. See Fig. 38. Verify wavelength (time)
decreases as engine RPM increases. If wave pattern fluctuates to left
or right, check for loose timing belt or an abnormality in sensor
pick-up disc. If a rectangular wave pattern is generated even when
engine is not started, substitute known-good CKP sensor. Repeat test.
If wave pattern is still abnormal, go to step 6).
Fig. 38: Identifying Known-Good CKP Sensor Wave Pattern
Courtesy of Mitsubishi Motor Sales of America

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Trailer Towing Or  Replace  Engine Oil  3,000 Mile (4800 KM) 

Police, Taxi Or    Or 3 Months 

Commercial Type \b
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Operation  Replace  Oil Filter  6,000 Mile (9600 KM) 

   Or 6 Months 

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 Replace  Spark Plugs  15,000 Mile (24,000 KM) 

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 Replace  Manual  30,000 Mile (48,000 KM) 

 Transmission  

  Oil  

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 Replace Transfer Oil  30,000 Mile (48,000 KM) 
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Extensive Idling  Replace  Engine Oil  3,000 Mile (4800 KM) 

Driving in Stop &    Or 3 Months 

Stop & Go Traffic    

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 Replace  Oil Filter  6,000 Mile (9600 KM) 

   Or 6 Months 
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Short-trip  Replace  Engine Oil  3,000 Mile (4800 KM) 

Operation at    Or 3 Months 

Freezing \b
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Temperatures  Replace  Oil Filter  6,000 Mile (9600 KM) 

(Engine not    Or 6 Months 

thoroughly warmed)\b
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 Replace  Spark Plugs  15,000 Mile (24,000 KM) 
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Driving In  Replace  Air Cleaner  15,000 Mile (24,000 KM) 

Sandy Areas   Filter  
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Driving In  Inspect  Disc Brake  6,000 Mile (9,600 KM) 

Salty Areas   Pads  Or 6 Months 
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More than 50 %  Replace  Engine Oil  3,000 Mile (4800 KM) 

Operation in Heavy   Or 3 Months 

City Traffic Or \b
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At Sustained High  Replace  Oil Filter  6,000 Mile (9600 KM) 

Speeds During Hot    Or 6 Months 

Weather Above \b
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90 F (32 C)  Replace  Manual  30,000 Mile (48,000 KM) 

 Transmission  

  Oil  

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 Replace Transfer Oil  30,000 Mile (48,000 KM) 
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Driving On  Replace  Manual  30,000 Mile (48,000 KM) 

Off-Road  Transmission  

  Oil  

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 Replace Transfer Oil  30,000 Mile (48,000 KM) 
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(
1) - Perform these services at the mileage or number of months 

(since the last time), WHICHEVER COMES FIRST. 
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7,500 MILE (12,000 KM) NORMAL SERVICE
7,500 MILE (12,000 KM) NORMAL SERVICE

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 Drive Shaft Boots (
4) 
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 Exhaust System (
3) 
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 Distributor Cap & Rotor (
7) 
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REPLACE 
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 Engine Oil (
1) 
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 Engine Oil Filter (
2) 
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 Engine Coolant 
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 Automatic Transmission Fluid 
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 Rear Axle Oil 
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 Spark Plugs 
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 Timing Belt (
9) 
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 Ignition Cables (
8) 
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 Air Cleaner Filter 
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(
1) - Change once a year or every 7,500 miles (12,000 KM). 

(
2) - If mileage is less than 7,500 miles (12,000 KM) each year, 

replace the oil filter at every oil change. 

(
3) - Or inspect every 2 years. 

(
4) - Or inspect every year. 

(
5) - Or change every 2 years. 

(
6) - Or lubricate grease every 2 years. 

(
7) - Or inspect every 5 years. 

(
8) - Or replace every 5 years. 

(
9) - For California & Massachusettes, this maintenance is 

recommended but not required. 
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LUBRICATION SPECIFICATIONS 
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Material  Condition  Specification 
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Engine Oil  Ambient Temperature Less Than SAE 5W-30 

(
1)  0F (-18C) To 100F (38C)  

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Ambient Temperature Above 0F  SAE 10W-30 

 (-18C) To Over 100F (38C)  
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Engine  All  50/50 Mixture Of 

Coolant   Distilled Water & 

  Ethylene Glycol 
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Manual  All API Classification GL-4

Transmission   SAE 75W-85W Or 75W-90 
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Automatic  All  "ATF DEXRON II" Or 

Transmission   Equivalent 
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Brake Fluid  All  DOT 3 Or DOT 4 
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Rear Axle  All API Classification GL-5

  Or Higher (
2) 

  Engine Coolant 
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 Automatic Transmission Fluid 
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 Rear Axle Oil 
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 Spark Plugs 
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 Timing Belt (
9) 
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 Ignition Cables (
8) 
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 Air Cleaner Filter 
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(
1) - Change once a year or every 7,500 miles (12,000 KM). 

(
2) - If mileage is less than 7,500 miles (12,000 KM) each year, 

replace the oil filter at every oil change. 

(
3) - Or inspect every 2 years. 

(
4) - Or inspect every year. 

(
5) - Or change every 2 years. 

(
6) - Or lubricate grease every 2 years. 

(
7) - Or inspect every 5 years. 

(
8) - Or replace every 5 years. 

(
9) - For California & Massachusettes, this maintenance is 

recommended but not required. 
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LUBRICATION SPECIFICATIONS 
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Material  Condition  Specification 
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Engine Oil  Ambient Temperature Less Than SAE 5W-30 

(
1)  0F (-18C) To 100F (38C)  

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Ambient Temperature Above 0F  SAE 10W-30 

 (-18C) To Over 100F (38C)  
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Engine  All  50/50 Mixture Of 

Coolant   Distilled Water & 

  Ethylene Glycol 
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Manual  All API Classification GL-4

Transmission   SAE 75W-85W Or 75W-90 
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Automatic  All  "ATF DEXRON II" Or 

Transmission   Equivalent 
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Brake Fluid  All  DOT 3 Or DOT 4 
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Rear Axle  All API Classification GL-5

  Or Higher (
2) 
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Transfer Case All API Classification GL-4

  SAE 75W-85W Or 75W-90 
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(
1) - SAE 5W-30 engine oil is preferred. SAE 10W-30 may be used if 

the Ambient Temperature is above 0 F (-18 C). 

(
2) - SAE90, 85W-90, 80W-90 may be used in temperatures above 

-10 F (-23 C). SAE 80W, 80W-90 may be used in temperatures 

from -30 F (-34 C) to -10 F (-23 C). SAE 75W may be used 

in temperatures below -30 F (-34 C). 
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FLUID CAPACITIES 
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