engine MITSUBISHI SPYDER 1990 Service Repair Manual

ENGINE (NON-TURBO)> On-vehicle
FUEL PUMP
(HOW TO REDUCE FUEL LINE PRESSURE)
When removing the fuel pipe, hose., etc., since fuel
in the fuel pipe line is high, do the following operation so
as to release fuel pressure in the line and
running out.
.
1.
2.
3.
4.
5 . Remove the rear seat cushion. (Refer to
Seat.)
Remove the protector to’
the fuel pump
connector.
Start the engine and let it run until it turn
the ignition switch to OFF.
Connect the fuel pump connector to install the prot ector.
Install the rear seat cushion..
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ENGINE (NON-TURBO)> .
13100210139
COMPONENT LOCATION
Evaporative emission purge solenoid
Evaporative emission ventilation solenoid
Fuel pump relay
Heated oxygen sensor (Front)
Heated
sensor (Rear)
P a r k / N e u t r a l p o s i t i o n s w i t c h
(Transaxle range switch) ,
Power steering pressure switch ,
Powertrain control module
0Throttle position sensor
Vehicle speed sensor
NOTE
The “Name” column is in alphabetical order.
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On-vehicle Inspection of
ENGINE (NON-TURBO)>
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On-vehicle Inspection of
ENGINE
TEMPERATURE SENSOR
CHECK
1. Disconnect the engine coolant temperature sensor
connector.
2. Measure the resistance between the sensor terminals.
INSTALLATION
1. Apply sealant to threaded
Specified sealant: Loctite 24200 or equivalent
2.
engine coolant sensor tighten
it to specified torque.
Sensor tightening torque: 7 (5
3. Fasten harness connectors securely.
THROTTLE POSITION SENSOR CHECK
1. the throttle position sensor connector.
2. Measure the resistance between the throttle posi tion
sensor side connector terminal 1 and terminal 3.
Standard value:
3. Measure the resistance between the throttle
sensor side, connector terminal 2 terminal 3.
Throttle valve slowly open until
fully open from the idle positionChanges smoothly in
t o t h e
angle of the
4. If the resistance is outside the standard value, ‘if it
doesn’t change smoothly, replace the throttle posit ion
sensor.
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On-vehicle of
ENGINE ( N O N - T U R B O ) >
o x y g e n s e n s o r
1. Disconnect the heated oxygen
2. Check that there is continuity between terminal 3 and
terminal 4 on the heated oxygen sensor connector.
3.If there is no continuity, replace the heated oxyge n sensor.
4.Warm up the engine until engine coolant is
or higher.
5.Use the jumper wires to connect terminal 3 of the h eated
oxygen sensor connector to the battery terminal and
terminal 4 to the battery
terminal.
Caution
Be very careful when connecting the jumper wires,
or the heated oxygen sensor can be damaged.
6. Connect a digital voltmeter between terminal 1
terminal 2.
7.While repeatedly racing the engine, heated
oxygen sensor output voltage.
Standard value:
Engine
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If-you make
ratio rich by racing the
engine repeatedly, a
normal heated oxygen
sensor will output a
voltaae of
8. If the sensor is defective, replace the heated
sensor.
NOTE
For removal and installation of the heated sensor,
refer to GROUP 15 Exhaust Pipe, Main Muffler.
oxygen sensor (rear)>
1. Disconnect the heated oxygen
connector.
2. Check that there is continuity terminal and
terminal 2 on the heated oxygen, sensor
3.If there is no continuity, replace the heated
NOTE
1.If the scan tool does not display the standard valu e
although no
malfunctionis found by t h e
above-mentioned continuity test and harness check,
replace the heated oxygen sensor (rear).

On-vehicle Inspection of ENGINE (NON-TURBO)> 1
2. removal and installation of the oxygen sensor,
refer to GROUP 15
Exhaust Pipe, Main
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32On-vehicle, Inspection of
(NON-TURBO)>
INJECTOR CHECK
MeasurementofResistance between Terminals
1. Remove the injector connector.
2. Measure the resistance between terminals.
Standard value:
[at
3. Install the injector connector
Checking operation sound
Using a stethoscope or long blade screwdriver, chec k the
operation sound (“tick-tick-tick”) of injectors dur ing idling or
during cranking
Check that as the engine speed increases, the frequ ency
of the operating sound also increases.
Caution
Note that even if the injector you are checking is not
operating, you will hear the operating sound of the other
injectors.
NOTE
If no operating sound is heard from the injector th at is being
checked, check the injector drive circuit. If there is nothing
wrong with the circuit, a defective injector or PCM is suspected
IDLE AIR CONTROL MOTOR (STEPPER
MOTOR) CHECK
Coil Resistance Check
1. Disconnect the idle air control motor connector.
2.Measure the resistance between terminal 1 and termi nal
4of the connector at the idle air control motor side .
Standard value: 36-52
[at
3.Measure the resistance between terminal 2 and termi nal
3 of the connector at the idle air control motor side.
Standard value: 36-52
[at
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On-vehicle Inspection of
ENGINE (NON-TURBO)>
EVAPORATIVE EMISSION PURGE
CHECK
1 7 ’
ELECTRIC EGR
Refer to GROUP 17 Emission Control
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REMOVAL AND INSTALLATION
l Fuel Line Pressure Reduction (Refer to P. Post-Installation Operation
Battery and Air Hose RemovallBattery and Air Intake Hose Installationl Fuel Leakage Inspection
Engine oilI
2.5Nm
I
6
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00003911
Removal steps
1. High-pressure fuel hose connection6. Retainers2.O-ring
3. Injector harness connector
4. Fuel rail5.Injector connectors

ENGINE (NON-TURBO)>
REMOVAL SERVICE POINT,
F U E L
Remove the fuel rail the attached’
,
Do not drop the injector.
INSTALLATION SERVICE POINTS
INJECTORS INSTALLATION
(1) Apply a small amount of clean engine oil to the O-ring.
Caution
Donot let the engine oil get into the fuel rail.
(2) While turning the injector to the left and righ t, install it
to the fuel rail.
(3) Check to be sure that the injector turns smooth ly.
If it does not turn smoothly, the O-ring may be tra pped,
remove the injector and then reinsert it into the f uel
and check again.
HIGH-PRESSURE FUEL HOSE CONNECTION
When connecting the high-pressure fuel hose to the fuel rail,
apply a small amount of engine oil to the hose union, and
then insert, being careful not to damage the O-ring .
Caution
Do not let the engine get .
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