1990 MITSUBISHI SPYDER spark plugs

ENGINE (TURBO)
AND ENGINE> Troubleshooting
INSPECTION PROCEDURE 22
Too high CO and HC concentration when idling
[Comment]Malfunction of the ratio
Abnormal air-fuel ratio is suspected.
SCAN TOOL Are diagnostic trouble codes output
N O
YES Refer to INSPECTION CHART FOR DIAGNOSTICTROUBLE CODES.
Check the ignition timing. Engine (Turbo)>NG
(Refer to GROUP On-vehicle Service.) Check that the crankshaft position sensor and belt installedCheck the ignition timing. Engine>(Refer to GROUP 11 On-vehicle Service.)
OK
NGSCAN TOOL Data list
21 Engine coolant temperature sensor. Check the engine coolant temperature malfunction. (Refer to
(Refer to INSPECTION PROCEDURE FOR DIAGNOSTIC
TROUBLE CODES
OK
SCAN TOOL Data listNG Check the intake air temperature (Refer to
13 Intake air temperature sensor (Refer to INSPECTION PROCEDURE FOR DIAGNOSTIC
OK TROUBLE CODE
SCAN TOOL Data list
25 Barometric pressure sensor (Refer to
OK
Check the pressure circuit malfunction. INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE
SCAN TOOL Data listNGCheck the oxygen sensor circuit malfunction (bank sensor 2). (Refer59 Heated oxygen sensor (rear) (Refer to to INSPECTION PROCEDURE FOR DIAGNOSTIC
l Transaxle gear TROUBLE CODE ranae l Driving with the throttle wide open
O K :
OK
SCAN TOOL Data list NG
Heated oxygen sensor (front) (Refer to OK: 1,000 when racing suddenly
OK
SCAN TOOL Data list11 Heated oxygen sensor (front) (Refer to O K : and
Check the oxygen sensor circuit malfunction (bank 1 sensor 1). INSPECTION PROCEDURE FOR DIAGNOSTICTROUBLE CODE
alternately when idling.
NG
Check the fuel pressure. (Refer to
Check the following items.
l Check the injectors for operation sound.
l Check the injectors for fuel leakage.
l Check the ignition coil, spark plugs, spark plug ca bles.
l Check the compression pressure.
l Check the positive crankcase ventilation system.
l Check the evaporative emission control system.
l Check the
system.I
Check trouble symptom.
Replace the three-way converter.
TSB Revision

ENGINE (TURBO)
AND ENGINE> Troubleshooting
Has the engine warmed up sufficiently when the exhaust gas is
tested? (Check with owner.)Let the engine warm up sufficiently before testing the exhaust gas.
,
l Check all vacuum hoses and connectors.
l Check electrical wires and connectors for obvious p roblems.
l Check the exhaust system for missing Repair
No
Check the ignition timing Engine (Turbo)>.
Check the ignition timing Engine>.
(Refer to GROUP
Refer to INSPECTION CHART TROUBLE CODE.
NG Check that the crankshaft position sensor and timi ng belt cover
are properly.
SCAN TOOL list
21 Engine coolant temperature sensor
(Refer to P.
Check the engine coolant temperature sensor circui t malfunction.
OK
NGCheck the intake air temperature sensor circuit mal function. (Referto INSPECTION PROCEDURE FOR DIAGNOSTIC
TROUBLE CODE
25 Barometric pressure sensor (Refer to
IOK
NG Check the barometric pressure sensor circuit (Refer
to INSPECTION PROCEDURE FOR DIAGNOSTIC
TROUBLE CODE
, N G
SCAN TOOL Data list Check the oxygen sensor circuit malfunction (bank 1 sensor 2).
59 Heated oxygen sensor (rear)’ (Refer to
l Transaxle: gear range TIC TROUBLE CODE l Drive with wide open throttleO K : 6 0 0 1 0 0 0
TSB Revision
OKNGSCAN TOOL Data list Check the oxygen sensor circuit malfunction (bank 1 sensor 1).
11 Heated oxygen sensor (front) (Refer to
OK: 600 1000 when racing suddenly TIC TROUBLE CODE
OK
OK
SCAN TOOL Data list Check the EGR system. (Refer to GROUP 17 Emission Control11 Heated oxygen sensor (front) (Refer to System)OK: 0 400 and 600 1000 alternately when idling
and 2500 OKNGMeasure the CO
Check the fuel pressure. (Refer to
sensor
l Check the injector for fuel leakages.
Check troub symptom. l Check the injectors for operation sound.
l Check the
spark plugs, spark plug cables.l Check the compression pressure. Replace the three-way catalytic converter.
l Check the positive crankcase ventilation system.
l Check the evaporative emission control system.

SPEED
NOTE
1.The standard idle speed by,
engine speed the
and there should usually for readjustment.
2. The adjustment, after first:
confirming that the spark plugs; the
air control servo, the compression pressure,
all normal.
1.. The vehicle should be prepared as follows before the
i n s p e c t i o n a n d a d j u s t m e n t .
lEngine coolant temperature:
l Lights, cooling fan and accessories: OFF
‘2.
l Transaxle: Neutral (A/T for range)
Connect the scan tool to the data link connector
N O T E
When the scan tool is connected, the diagnostic tes t mode
control terminal should be grounded.
3. Start the engine and run at idle.
4. Select the item No. 30 of the SCAN TOOL (MUT-II)
Actuator test.
NOTE
This holds the motor at the basic step to adjust the
basic idle speed.
5. Check the idle speed. Standard value: 750
50
NOTE
1. The engine speed may be 20 to 100 lower
than indicated above for a new vehicle [driven appr oxi-
mately 500 km (300 mile) or less], but no adjustment
is necessary.
2.If the engine stalls or the is low even though
the vehicle has been driven approximately 500 km (300 mile) or more, it is probable that deposits ar e
adhered to the throttle valve, so clean it. (Refer to

ALPHABETICAL INDEX
Transfer, Replacement ENGINE (TURBO) AND ENGINE> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL COOLER
Engine. . . . .
Transaxle ENGINE (NON-TURBO)> . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE> . . .
OIL FILTER, Engine, Maintenance . . . . . . . . . . , . . . . . . . .
Replacement .
OIL LEVEL
Transaxle, Check ENGINE (NON-TURBO)> . . . . . . , . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>. . . . . .
Transfer, Check ENGINE (TURBO) AND ENGINE> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL PAN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL PRESSURE GAUGE, Simple Check
OIL PUMP
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
11 1
. . . . . . . .
11
. . . . . . .
. . . . . . .
. . . . . . .
Power Steering ENGINE (NON-TURBO)> . . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND . . . . .
Pressure Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL PUMP SEAL . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL SCREEN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
OIL SEAL(S) Camshaft
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankshaft front . . . . . . . . . . . . . . . . . . . . .11. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Crankshaft rear . . . . . . . . . . . . . . . . . . . . .11. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OIL Engine, Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transfer, Replacement ENGINE (TURBO) AND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTPUT CURRENT
Test
ENGINE (NON-TURBO)> . . . . . . . . . . . . . , . . .
ENGINE (TURBO) AND . . . .
OUTPUT GEAR, Disassembly . . . . . . . . . . . . . .
OUTPUT . . . . . . . . . . . . . . . .
PAD
Disc Brake, Front, Check and Replacement . . . . . . . . .
Disc Brake, Rear, Check and Replacement . . . . . . . . .
Disc Brake, Maintenance . . . . . . . . . . . . . . . . . . . . . . , . . . .
PARK/NEUTRAL POSITION SWITCH
Adjustment
ENGINE (TURBO) AND ENGINE> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuity Check ENGINE (NON-TURBO)> . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE> . . . . .
PARKING BRAKE CABLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
. . . . . . . . . . . . . . . . . . . . . . . . . .
PARKING BRAKE DRUM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARKING BRAKE LEVER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARKING BRAKE LEVER, Stroke Check. . . . . . . . . . . . . . . . . .
PARKING BRAKE SWITCH, Check. . . . . . . . . . . . . . . . . . . . . . .
PEDAL
Accelerator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake.. . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake, Check and Adjustment. . . . . . . . . . . . . . . . . . . . . . .
Clutch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch, Check and Adjustment. . . . . . . . . . . . . . . . . . . . . . .
PERFORMANCE TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PIPE
Exhaust. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . .
(TURBO) AND ENGINE>. . .
PISTON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PLANETARY GEAR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PLATE, Drive
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PLAY
End, Wheel Bearing, Check. . . . . . . . . . . . . . . . . . . . . . . . . . .
End, Wheel Bearing, Check . . . . . . . . . . . . . . . . . . .
PLUGSpark, Check ENGINE (NON-TURBO)>. . . . . . . .
Spark, Cleaning ENGINE (NON-TURBO)>. . . . . .
Spark, Resistance Check ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . . . . . .
S p a r k , T e s t ENGINE (NON-TURBO)> . . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND . . . . .
Spark, Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POSITION LIGHT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POSITIVE CRANKCASE VENTILATION SYSTEM ENGINE . . . . . . . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>.. . . . . . . . .
POSITIVE CRANKCASE VENTILATION VALVE
Check ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>. . .
POST-COLLISION DIAGNOSIS. . . . . . . . . . . . . . . . . . . . . . .
POWER RELAY, Check. . . . . . . . . . . . . . . . . . . . . . . . .. . . .
POWER STEERING GEAR BOX. . . . . . . . . . . . . . . . . . . . . .
POWER STEERING HOSES ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>.. . . . . . .
POWER STEERING OIL PUMP
ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>.. . . . . . .
POWER TRANSISTOR, Ignition. . . . . . . . . . . . . . . . . . . . . . . .
PRESSURE
Compression, Check . . . . . . . . . . . . . . . . .
. . . . . . . . . . . ... . . . .
. . . . . . . . . . . . . . . . . . . . .Fuel, Test ENGINE . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>. . . .
PRESSUREClutch Air, Tests ENGINE (NON-TURBO)> . . . . Inflation, Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,
Line, Adjustment ENGINE (TURBO) AND ENGINE> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ALPHABETICAL, INDEX
ENGINE (TURBO) AND ENGINE>. . . . . . .
Intake Air Temperature, On-vehicle ENGINE (NON-TURBO)> . . . . . . . . . . . . . .
ENGINE (TURBO) AND . . , .
Throttle Position, Adjustment ENGINE (TURBO) AND ENGINE> . . . .
Throttle Position, On-vehicle Inspection ENGINE (NON-TURBO)> . . . . . . . . . . . . . ENGINE (TURBO) AND ENGINE>. . .
Volume Air Flow ENGINE (TURBO) AND ENGINE> . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Speed
. . . . . . . . . . . . . . . . . . . . .
SERVO,
. . . . . . . . .
. . . . . . . . . . . . . . . . . .
Adjustment ENGINE (TURBO) AND ENGINE> . . . . . . . . . . . . . . . . . . . . . .
SHAFT
Counterbalance. . . . . . . . . . . . . . . . . . . . . . .11Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Output . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Input, Disassembly . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
Propeller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output. . . . . . . . . . . . . . . . . . . . . . . . . .
Steering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHIFT. . . . . . . . . . . . . . . .
SHIFT LOCK MECHANISM
Check
ENGINE (NON-TURBO)>. . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE> .
SHIFTER RAILS, Overhaul . . . . . . . . . . . . . . . . . .
SHOCK ABSORBER
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIGHT GLASS REFRIGERANT LEVEL, Test. . . . . . . . . . . . . . .
SOLENOID On-vehicle Inspection ENGINE (TURBO) AND ENGINE>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric EGR Transducer, Check ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . . . . . . .
Electric EGR Transducer, On-vehicle ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . . . .
Evaporative Emission Pur ENGINE (NON- Check. . . . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>. . . . . . .
Evaporative Emission Pur On-vehicle Inspection ENGINE (NON-. . . . . . , . . .
E N G I N E A N D . .
Evaporative . . . . . . . . . . . . . . . . . .
Fuel Pressure, On-vehicle Inspection (TURBO)>. . . . . . . . . . . . . . . .
Turbocharger Waste Gate, Check . . . . . . . . . . . .
Turbocharger Waste Gate, On-vehicle Inspection ENGINE (TURBO)> . . . . . . . . . . . . . . . . . .
SPARK COIL, Test ENGINE (NON-TURBO)> . . . . .
SPARK PLUG
Check ENGINE (NON-TURBO)> . . . . . . . . .
ENGINE (TURBO) AND ENGINE> . . Gleaning ENGINE (NON-TURBO)=.. . . . . . . . . .
ENGINE (TURBO) AND ENGINE>
Test ENGINE (NON-TURBO)> . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE> . . , .
SPARK PLUG CABLE, Resistance Check ENGINE . . . . . . . . . . . . . . . . . . . . . .
SPARK PLUG CABLE, Resistance ENGINE (TURBO) AND ENGINE>. . . . . . . . . .
SPARK PLUG CABLE, Test ENGINE (TURBO) AND ENGINE> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPARK PLUGS, Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . SPEAKER . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . .
. ..*......
SPECIFICATIONS, Pressure Check ENGINE (NON-TURBO)> . . . . . . . . . . . . . . . . . . . . SPEEDOMETER, Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPEEDOMETER GEAR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS AIR BAG CONTROL UNIT (SRS-ECU). . . . . . . . . . . .
SERVICE . . . . . . . . . . . . . . . . . . . . . . .
SRS SYSTEM, Maintenance. . . . . . . . . . . . . . . . . . .. . . . . .STABILIZER BAR Suspension>.. . . . . . . . . . . . . .......,. . . . . . .
STARTER MOTOR ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE>.. . . . . . . .
STARTING SYSTEM E N G I N E . . . . . . . . . . . . . . . . . . . . . .
ENGINE ENGINE>... . . . .
STATIONARY STEERING EFFORT, Check. . . . . . . . . . . . . . .
STEERING Check. . . . . . . . . . . . . . . . . . . . . . . . .
STEERING LINKAGE SEALS, Maintenance. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STEERING WHEEL. . . . . . . . . . . . . . . . . . . . . . . . . . . ..
. . . .STEERING WHEELFree Play Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return to Center, Check. . . . . . . . . . . . . . . . . . . . . . . . . . . .
STEERINGAngle Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stationary Effort Check. . . . . . . . . . . . . . . . . . . . .. . . . . . .
STOP LIGHT SWITCH, Check. . . . . . . . . . . . . . . . . . . . . . ....
STOPPER, Roll, Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUNROOF. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .
SUSPENSION, Rear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SWITCHAir Conditioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
ENGINE (NON-TURBO)>. . . . . . . . . . . . . . . . . . .
ENGINE (TURBO) AND ENGINE> . . . . .
Closed Adjustment ENGINE
(TURBO) AND ENGINE>. . . . . . . . . . . . . . , . . .
Closed Position, On-vehicle Ins ENGINE (TURBO) AND EN . . . . . top. . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . .
Convertible top, bypass. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defogger, Rear Window. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual Pressure, Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hazard Warning Light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition. . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .Interlock, Check and . . . . . . . .. . . . . . . . . .
Operating Check.. . . . . . . . . . . . . . . . . . . . . . . . .
Parking Brake, Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Steering Pressure, Check. . . . . . . . . . . . . . . . . . .
Stop Light, Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYNCHRONIZER. . . . . . . . . . . . . . .
Overhaul. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TACHOMETER, Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ITAPE PLAYER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .