check engine MITSUBISHI SPYDER 1990 Service Repair Manual

ENGINE COOLING Radiator
Projection
Water outlet fitting water inlet fitting
Engine (Non-turbo)
REMOVAL SERVICE POINTS
RADIATOR UPPER LOWER
HOSE DISCONNECTION
After making mating marks on the hose and the hose
clamp, disconnect the radiator hose.
TRANSAXLE FLUID COOLER
FLUID COOLER HOSE AND PIPE
REMOVAL ,
After removing the hose from the radiator, plug the hose
and the radiator nipple to
dust or
from getting in.,
INSTALLATION SERVICE POINT
RADIATOR LOWER HOSE/RADIATOR UPPER HOSE CONNECTION
(1) each hose as the projection of the water
outlet fitting or water inlet fitting.
(2) Align the mating marks on the radiator hose and hose
clamp, and then connect the radiator hose.
INSPECTION
RADIATOR FAN MOTOR CHECK
(1)Check to be sure that the radiator fan rotates when battery,
voltage is applied between terminals (as shown the
figure).
(2) Check to see that abnormal noises are not
while motor is turning.

E N G I N E C O O L I N G T h e r m o s t a t ” .
Engine (Non-turbo)>
Engine (Turbo) and Engine>
INSPECTION
T H E R M O S T A T. . .
,
Check that the valve closes ‘tightly-at temperature.
lCheck for defects or damage.
Check for rust or other
Remove, if any.
Immerse thermostat in container of Stir to raise
water temperature and check that the thermostat val ve
opening temperature and the water temperature with valve
fully open [valve lift: 8 mm
in.)] are at the standard value.
Standard value:
Valve opening temperature:
Engine (Non-turbo)>
Engine (Turbo) and Engine>
Full-opening temperature:
Engine (Non-turbo)>
Engine (Turbo) and Engine>
NOTE
Measure valve height when fully closed. Calculate l ift by mea-
suring the height when fully open.
Replace the thermostat if it does not open properly , or does
not have the correct valve lift.
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E N G I N E C O O L I N G Water Pump Engine
P O I N T
O-RING INSTALLATION ,
Insert the O-ring to the and
of the O-ring with water or coolant.By with
water or engine coolant, the insertion the will become
easier.
Caution1.Do not allow engine oil or othei grease to to theO-ring.2. When inserting the water pump, check that there is no
sand, dirt, etc. on its inner surface’.
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Water Pump Engine (Turbo) ENGINE COOLING
I N S T A L L A T I O N S E R V I C E P O I N T
O-RING INSTALLATION
Insert the O-ring to the water inlet pipe, and coat the outer
of the O-ring with or coating Water
or engine coolant, the insertion to the water pump will become easier.
Caution
1.Do not allow engine other grease to to the
O-ring.
2.When inserting the pipe, check that is’ no dirt,
etc. on its inner surface.
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WaterHose and Water Pipe Engine
ENGINE COOLING (Non-turbo)>
REMOVAL POINTS.
HEATER HOSE
Caution
For cover the a
before a heater hose, the-
below the hoses.
Cylinder block
O-ring
Water inlet pipe assembly
RADIATOR LOWER HOSE DISCONNECTION
After making mating marks on the radiator hose and the hose
clamp, disconnect the radiator hose.
I N S T A L L A T I O N
P O I N T S
Insert the O-ring to the water inlet pipe, and coat
circumference of the water or engine
Do not allow or other grease to adhere the
O-ring.
RADIATOR LOWER HOSE CONNECTION
Align the mating marks on the radiator and hose clamp,
and then connect the radiator hose.
INSPECTION
WATER PIPE AND CHECK’
Check the water pipe and hose’ for cracks, damage,’
and replace them if necessary.
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Water Hose and Water Engine (Turbo)
ENGINE and Engine>
Thermostat case assembly or water pump
O-ring
Water inlet pipe assembly
Engine (Turbo)> Engine>
in.)
Projection
Water fitting orwater inlet fitting
REMOVAL SERVICE POINT
RADIATOR
HOSE DISCONNECTION,After making mating marks on the radiator the hose
clamp, disconnect the radiator
INSTALLATION SERVICE POINTS
O-RING INSTALLATION
Insert the O-ring to the water inlet pipe, and coat the outer
circumference of the O-ring with water or engine co olant.
Caution
Do not allow engine oil or other grease to adhere t o the
O-ring.
THERMOSTAT CASE ASSEMBLY INSTALLATION
Squeeze out the sealant from the tube evenly and ap ply
it so that there is not too much places without
sealant.
Specified Sealant:
Mitsubishi Genuine Parts No. or equivalent
RADIATOR LOWER HOSE/RADIATOR UPPER
HOSE CONNECTION
(1) Insert each hose as far as the projection of th e water
outlet fitting or water inlet fitting.
(2) Align the mating marks on the radiator hose and hose
clamp, and then connect the radiator hose.
INSPECTION
WATER PIPE AND HOSE CHECK
Check the water pipe and hose for cracks, damage, c logs
and replace them if necessary.
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INTAKE
EXHAUST,
CHARGE AIR COOLER . . . . . . . . . . . . . . . . . . . .6
EXHAUST MANIFOLD
ENGINE (NON-TURBO)> . . . . . . . . . .17
ENGINE (TURBO)> . . . . . . . . . . . . . . .16
ENGINE> . . . . . . . . . . . . . . . . . . . . . . . .21
EXHAUST PIPE AND MAIN MUFFLER . . . . .22
GENERAL INFORMATION. . . . . . . . . . . . . . . . . .2
INTAKE MANIFOLD
ENGINE (NON-TURBO)> . . . . . . . . . . . 7
ENGINE (TURBO)>. . . . . . . . . . . . . . .11
ENGINE>. . . . . . . . . . . . . . . . . . . . . . . .14
ON-VEHICLE SERVICE. . . . . . . . . . . . . . . . . . . . .3
C O N T E N T S1 5 1 6 6 6 6 6 6 7 6
Intake Charge Pressure Control System
Check . . . . . . . . . . , . . . . . . . . . . . . .4
Intake Manifold Vacuum Check. . . . . . . . . . . . . . .
Turbocharger Bypass Valve Check . . . . .
. . . . . . . . . . . . . . . . . . 5
Turbocharger Waste Gate Solenoid Check
< T u r b o > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . + . 4
Turbocharger Supercharging Pressure Check
< T u r b o > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SERVICE SPECIFICATIONS . . . . . . . . . . . . . . . . . 2
.
SPECIAL TOOLS . . . . . . ‘ . . . . . . . . . . . . . . . . . . . .2
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . 2
.

INTAKE AND EXHAUST Service
ON-VEHICLE SERVICE
INTAKE MANIFOLD VACUUM . Engine (Turbo)>
Refer to GROUP 11 A On-vehicle
Engine (Non-turbo)>
Refer to GROUP 11 On-vehicle Service.
Engine>’
Refer to GROUP 11 On-vehicle Service.
TURBOCHARGER SUPERCHARGINGPRESSURE CHECK
Caution
Do a test drive with two passengers in the and
where full throttle acceleration can be safely made .
A driver should not read the pressure gauge, but a front
passenger should.
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(1) Disconnect the hose (black) from the
gate solenoid, and connect the pressure gauge. to t he
hose. Plug the nipple of the solenoid valve
which
the hose (black) has been
(2)Drive the vehicle with and
to a speed of more than at gear.
the supercharging pressure when the pointer is stab ilized.
Standard value:
(3) If the supercharging pressure deviates from the standard
value, check the following items for possible cause s.
When pressure is high:
l Malfunction of turbocharger waste gate actuator
lMalfunction of turbocharger waste gate valve
l Disconnected or cracked turbocharger waste gate
actuator hose
When pressure is low:
lMalfunction of turbocharger waste gate actuator
l Supercharging pressure leaks
l Faulty turbocharger

INTAKE CHARGE PRESSURE CONTROL
CHECK
(1) After the diagnostic trouble code of system is com-
pletely read, turn off the ignition switch.
(2) Disconnect the hose (black) from the turbocharg er waste
gate solenoid and plug this hose.
(3) Connect a hand vacuum pump to the turbocharger waste
gate solenoid nipple to which the hose (black) was con-
n e c t e d .
(4) Use the vacuum pump to apply negative pressure, and
the negative pressure condition while the engine
is
and while it is idling.
Engine state
Normal state
(Ignition switch: ON) Negative pressure is
I maintainedI
(after warmup) Negative pressure leaks
NOTE
If this check indicates an abnormal condition, the turbocharger
waste solenoid is broken.
CHECK,
OPERATION CHECK .
(1) Connect a-hand
(2) Use a jumper connect
terminal and battery terminal.
(3) Connect and disconnect the jumper
battery
negative terminal to, negative
tightness. .
Jumper wire (B) nipple
I
Normal state
condition
I
Open
CloseNegative pressure leaks
Negative pressure is held.
Disconnected Open Negative pressure is held.
COIL RESISTANCE CHECK
Measure resistance between solenoid valve terminals .
Standard value: 36-44
[at
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AND EXHAUST Intake Manifold
FUEL HOSE
Relieve pressure in line to prevent fuel outflow.
(Refer to GROUP
On-vehicle Service.)
Cautlon,
Cover fuel pipe line with shop after
sure as certain pressure may still
FUEL INJECTOR AND PRESSURE
ASSEMBLY REMOVAL
Remove fuel rail with fuel injector and pressure re gulator
attached.
Caution
Do not drop fuel injector when removing fuel rail.
INSTALLATION
HIGH-PRESSURE FUEL HOSE
When connecting the high-pressure hose to the fuel rail,
apply a small amount of new engine oil to the hose union,
and then insert, beihg careful not to
O-ring.
Caution
Do not let engine oil get into the rail.
INSPECTION15100310123
Check the following points; replace the part if a p roblem is
found.
INTAKE MANIFOLD CHECK
1. Check for damage or cracking of any
2.Check for obstruction of the negative
outlet port, and for obstruction of the water passa ge or
gas passage.
3.Using a straight edge and a feeler gauge, check for distor-
tion of the cylinder head
Standard value: 0.15 mm less
Limit: 0.2 mm
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