1998 MITSUBISHI MONTERO ignition coil
[x] Cancel search: ignition coilPage 1369 of 1501
widening the gap to 1/4-3/8".
Disconnect spark plug wire
and insert test plug. Ground
plug, crank engine, and
check for spark.
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GOOD SPARK NO SPARK
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* If plug sparks, driveability * Remove coil wire from the
problem is most likely NOT distributor and attach the
in the ignition system. modified spark plug. Ground
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the plug and crank engine
while checking for spark.
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GOOD SPARK NO SPARK
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* If plug has a good spark, * Proceed to the IGNITION
the problem is in the plug PRIMARY TROUBLE SHOOTING
wires, distributor cap, or CHECK CHART below in this
rotor. Replace components article.
as necessary.
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Ignition Primary Trouble Shooting Chart
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START: Visually inspect primary ignition wires for
broken, frayed, split, or cut wires. Also check
for loose, corroded, or disconnected connectors.
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OK NOT OK
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* Check that battery voltage * Repair or replace damaged
is at least 11.5 volts. components as necessary.
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NOT OK OK
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* Replace or recharge the * Check for battery voltage
battery. at the positive terminal of
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the coil.
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OK NOT OK
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* Check air Gap of the Pick-Up * Check resistance of ballast
coil in the distributor. resistor (if used) for the
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correct resistance value.
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Page 1370 of 1501
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OK NOT OK
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OK NOT OK
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OK NOT OK
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* Check Pick-Up coil for * Adjust or replace as
correct resistance value. necessary.
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NOT OK OK
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* Replace Pick-Up coil if * Check control module for
not to specification. good ground connections.
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OK
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* If vehicle fails to run at this point, go to
the appropriate article in the ENGINE
PERFORMANCE section.
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OK NOT OK
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* Check wires from the battery/ * Replace ballast resistor
ignition switch to the coil. if the measured resistance
Also check the coil primary value is not within
and secondary resistance. specification.
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STARTER TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
BASIC STARTER TROUBLE SHOOTING CHART
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CONDITION POSSIBLE CAUSE CORRECTION \
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Starter Fails Dead battery or bad Check battery charge
to Operate connections between and all wires and
starter and battery connections to starter
Ignition switch faulty Adjust or replace
or misadjusted ignition switch
Open circuit between Check and repair wires
starter switch ignition and connections as
terminal on starter relay necessary
Starter relay or starter See Testing in STARTER
defective article
Page 1372 of 1501
Engine overheated See ENGINE COOLING
SYSTEM article
Engine oil too heavy Check that proper
viscosity oil
is used
Poor battery-to-starter Check that all
connections between
battery and starter are
clean and tight
Current draw too low or See Bench Tests in
too high STARTER article
Bent armature, loose pole See STARTER article
shoes screws or worn
bearings
Burned solenoid contacts Replace solenoid
Faulty starter Replace starter
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Starter Engages Engine timing too far See Ignition Timing in
Engine Only advanced TUNE-UP article
Momentarily
Overrunning clutch not Replace overrunning
engaging properly clutch. See STARTER
article
Broken starter clutch See STARTER article
Broken teeth on engine Replace flywheel and
flywheel check starter pinion
gear for damage
Weak drive assembly See STARTER article
thrust spring
Weak hold-in coil See Bench Tests in
STARTER article
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Starter Drive Defective point assembly See Testing in STARTER
Will Not Engage article
Poor point assembly ground See Testing in STARTER
article
Defective pull-in coil Replace starter
solenoid
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Starter Relay Dead battery Charge or replace
Does Not Close battery as necessary
Faulty wiring Check all wiring and
connections leading to
relay
Neutral safety switch Replace neutral safety
faulty switch
Starter relay faulty Replace starter relay
Page 1392 of 1501
or alcohol
Intermittent ECM ground Test ECM ground
connection for
resistance
Restricted air cleaner Replace air cleaner
Restricted exhaust system Test for exhaust
manifold back
pressure
Poor MAF sensor signal Check leakage
between sensor and
manifold
Poor VSS signal If tester for ALCL
hook-up is available
check that VSS
reading matches
speedometer
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Ping or Knock on Poor Knock sensor signal Test for shorted or
Acceleration open sensor or
circuit
Poor Baro sensor signal Test for shorted or
open sensor or
circuit
Improper ignition timing See VEHICLE EMISSION
CONTROL LABEL (where
applicable)
Check for engine Low coolant, loose
overheating problems belts or electric
cooling fan
inoperative
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NOTE: For additional electronic fuel injection trouble shooting
information, see the appropriate article in the ENGINE
PERFORMANCE section (not all vehicles have Computer Engine
Control articles). Information is provided there for
diagnosing fuel system problems on vehicles with electronic
fuel injection.
IGNITION SYSTEM TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
Ignition Secondary Trouble Shooting Chart
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START: Visually inspect Spark Plug Wires, Coil Wires,
Plug Wire Boots, Rotor, and Distributor Cap for
signs of damage.
Page 1393 of 1501
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OK NOT OK
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* To test secondary ignition * Repair or replace
system, modify a Spark Plug damaged components
by attaching a ground wire as necessary
to the body of the plug and
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widening the gap to 1/4-3/8".
Disconnect spark plug wire
and insert test plug. Ground
plug, crank engine, and
check for spark.
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\b
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GOOD SPARK NO SPARK
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\b \
\b
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* If plug sparks, driveability * Remove coil wire from the
problem is most likely NOT distributor and attach the
in the ignition system. modified spark plug. Ground
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\b
the plug and crank engine
while checking for spark.
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\b
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GOOD SPARK NO SPARK
\
\b \
\b
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* If plug has a good spark, * Proceed to the IGNITION
the problem is in the plug PRIMARY TROUBLE SHOOTING
wires, distributor cap, or CHECK CHART below in this
rotor. Replace components article.
as necessary.
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\b
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\b
Ignition Primary Trouble Shooting Chart
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\
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START: Visually inspect primary ignition wires for
broken, frayed, split, or cut wires. Also check
for loose, corroded, or disconnected connectors.
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\
\b
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OK NOT OK
\b \b
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* Check that battery voltage * Repair or replace damaged
is at least 11.5 volts. components as necessary.
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\b
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\b
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NOT OK OK
\b \b
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* Replace or recharge the * Check for battery voltage
battery. at the positive terminal of
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the coil.
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\b
Page 1394 of 1501
![MITSUBISHI MONTERO 1998 Service Manual \
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OK NOT OK
\b \b
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* Check air Gap of the Pick-Up * Check resistance of ballast
coil in the distributor. resistor (if used) for the
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correct resistance value.
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\b
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OK NOT OK
\b \b
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* Check Pick-Up coil for * Adjust or replace as
correct resistance value. necessary.
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NOT OK OK
\b \b
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* Replace Pick-Up coil if * Check control module for
not to specification. good ground connections.
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OK
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* If vehicle fails to run at this point, go to
the appropriate article in the ENGINE
PERFORMANCE section.
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OK NOT OK
\b \b
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* Check wires from the battery/ * Replace ballast resistor
ignition switch to the coil. if the measured resistance
Also check the coil primary value is not within
and secondary resistance. specification.
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\b
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\
\
\b
STARTER TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
BASIC STARTER TROUBLE SHOOTING CHART
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CONDITION POSSIBLE CAUSE CORRECTION \
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Starter Fails Dead battery or bad Check battery charge
to Operate connections between and all wires and
starter and battery connections to starter
Page 1396 of 1501
connections for
tight and clean
connections
Ignition switch faulty Adjust or replace
or misadjusted ignition switch as
necessary
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Starter Cranks Battery weak or Charge or replace
Engine Slowly defective battery as necessary
Engine overheated See ENGINE COOLING
SYSTEM article
Engine oil too heavy Check that proper
viscosity oil
is used
Poor battery-to-starter Check that all
connections between
battery and starter are
clean and tight
Current draw too low or See Bench Tests in
too high STARTER article
Bent armature, loose pole See STARTER article
shoes screws or worn
bearings
Burned solenoid contacts Replace solenoid
Faulty starter Replace starter
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Starter Engages Engine timing too far See Ignition Timing in
Engine Only advanced TUNE-UP article
Momentarily
Overrunning clutch not Replace overrunning
engaging properly clutch. See STARTER
article
Broken starter clutch See STARTER article
Broken teeth on engine Replace flywheel and
flywheel check starter pinion
gear for damage
Weak drive assembly See STARTER article
thrust spring
Weak hold-in coil See Bench Tests in
STARTER article
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Starter Drive Defective point assembly See Testing in STARTER
Will Not Engage article
Poor point assembly ground See Testing in STARTER
article
Defective pull-in coil Replace starter
solenoid
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Starter Relay Dead battery Charge or replace
Page 1400 of 1501
![MITSUBISHI MONTERO 1998 Service Manual ignition switch
Open circuit between Repair circuit
ignition switch and
starter solenoid
\](/manual-img/19/57333/w960_57333-1399.png "MITSUBISHI MONTERO 1998 Service Manual ignition switch
Open circuit between Repair circuit
ignition switch and
starter solenoid
\")
ignition switch
Open circuit between Repair circuit
ignition switch and
starter solenoid
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Engine Runs Fuel lines leaking or Tighten fitting,
Rough clogged remove restriction
Initial timing incorrect Reset ignition timing
see ENGINE PERFORMANCE
Centrifugal advance Repair distributor
malfunction advance
Defective spark plugs or Replace plugs or plug
wiring wiring
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Component Failure Spark arc-over on cap, Replace cap, rotor or
rotor or coil or coil
Defective pick-up coil Replace pick-up coil
Defective ignition coil Replace ignition coil
Defective vacuum unit Replace vacuum unit
Defective control module Replace control module
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BASIC ELECTRONIC IGNITION TROUBLE SHOOTING
CHARTS - USING OSCILLOSCOPE PATTERNS
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CONDITION POSSIBLE CAUSE CORRECTION \
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Firing Voltage Retarded ignition timing Reset ignition
Lines are the Same, timing, see ENGINE
but Abnormally High PERFORMANCE section
Fuel mixture too lean Readjust carburetor,
see ENGINE PERFORMANCE
High resistance in coil Replace coil wire
wire
Corrosion in coil tower Clean and/or replace
terminal coil
Corrosion in distributor Clean and/or replace
coil terminal distributor cap
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Firing Voltage Fuel mixture too rich Readjust carburetor,
Lines are the Same see ENGINE PERFORMANCE
but Abnormally Low
Breaks in coil wire causing Replace coil wire
arcing
Cracked coil tower causing Replace coil
arcing
Low coil output Replace coil
Low engine compression Determine cause and