1990 MITSUBISHI SPYDER spark plugs replace

ENGINE (TURBO)
INSPECTION PROCEDURE 4
The check engine/malfunction indicator lamp remains
and never goes out.
[Comment]
In cases such as the above, the cause is probably t hat the ECM is detecting a problem in a
sensor or actuator, or that one of the malfunctions listed at right has occurred.
,
P r o b a b l e c a u s e
l c h e c k indicator lamp and ECM
l Malfunction of the ECM
SCAN TOOL
DTCRefer to I N S P E C T I O N C H A R T F O R TROUBLE CODES.
lDisconnect the connector, and measure at the harnes sside.l Disconnect the ECM connector.
l Continuity between 51 and ground
OK: No continuity
OK Check the harness wire between-combination meter an
d
tor. Repair, if necessary.
Replace the ECM.
INSPECTION PROCEDURE 5
Cranks, won’t start Probable cause
[Comment]l Malfunction of the ignition systemIn cases such as the above, the cause is probably t hat the spark plugs are fouled defective, orl Malfunction of the fuel pump systemthat the supply of fuel to the combustion chamber i s defective. Malfunction of the injector systemIn addition, foreign materials (water, kerosene, etc.) may be mixed with the fuel.l Malfunction of the ECM
l Foreign materials in fuel
Scan tool: Inspection when no initial combustion oc curs.
(Refer to
INSPECTION PROCEDURE 36.)
OK
Can any sound be heard from (Refer to
Yes
Ignition system: Inspection when no initial combust ion oc-curs. (Refer to INSPECTION PROCEDURE37.)
OK
PROCEDURE FOR DIAGNOSTIC TROUBLE CODES
Check battery positive voltage when cranking.
OK: 8 or hiaher Check the battery. (Refer to GROUP 54 -Battery.)
Check the following items. l Check the ignition coil, spark plugs, spark plug ca bles.
l Check if the injectors are clogged.
l Check if foreign materials (water, alcohol, etc.) g ot into fuel.
l Check the compression pressure.
TSB Revision

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.

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> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .