1990 MITSUBISHI SPYDER Service Repair Manual

wiper size service schedule diagram engine coolant air condition tailgate

Load previous 8 pages

Page 513 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual On-vehicle Inspection of
ENGINE (NON-TURBO)>
EVAPORATIVE EMISSION PURGE
CHECK
1 7 ’
ELECTRIC EGR
Refer to GROUP 17 Emission Control
TSB Revision

Page 514 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual 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

Page 515 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual 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)

Page 516 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (NON-TURBO)>
THROTTLE BODY
REMOVAL AND INSTALLATION
Pm-removall Battery Removal
(Refer to GROUP 17
On-vehicle
3.9 Nm5
2.9
Removal steps
1. Air intake hose
2. Accelerator c

Page 517 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (NON-TURBO)> Throttle Body
DISASSEMBLY AND REASSEMBLY
2.2
2I
. .
1. .
steps
1. motor assembly2. Throttle body
DISASSEMBLY SERVICE POINT
MOTOR REMOVAL
Do not disassemble

Page 518 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE
AND ENGINE> G e n e r a l
ENGINE (TURBO) AND ENGINE>13199910319
GENERAL INFORMATIONThe
Fuel Injection System consists
of sensors which detect the engine conditions,
the

ENGINE
AND ENGINE> G e n e r a l
ENGINE (TURBO) AND ENGINE>13199910319
GENERAL INFORMATIONThe
Fuel Injection System consists
of sensors which detect the engine conditions,
the ENGINE CONTROL MODULE (ECM) which
controls the system based on signals from these
sensors, and actuators which operate under
the control of the ECM.
FUEL INJECTION CONTROL
The injector drive times and injector timing are
controlled so that the optimum air/fuel mixture
is supplied to the engine to correspond to the
continually-changing engine operation condi-
tions.
A single injector is mounted at the intake port
of each cylinder. Fuel is sent under pressure
from the fuel tank by the fuel pump, with the
pressure regulated by the fuel pressure regula-
tor. The regulated fuel is distributed to each
of the injectors.
Fuel injection is normally carried out once for
each cylinder for every two rotations of the
IDLE AIR CONTROL The idle speed is kept at the optimum speed
by controlling the amount of air that bypasses
the throttle valve in accordance with changes
in idling conditions and engine load during id-
ling.
The ECM drives the idle air control (IAC) motor
to keep the engine running at the pre-set idle
target speed in accordance with the engine
IGNITION TIMING CONTROL
The ignition power transistor located in the igni-
tion primary circuit turns ON and OFF to control
the primary current flow to the ignition coil.
This controls the ignition timing in order to pro-
vide the optimum ignition timing with respect The ECM carries out activities such as fuel
injection control, idle air control and ignition
timing control.
In addition, the ECM is equipped with several
diagnostic test modes which simplify trouble-
shooting when a problem develops.
. .
crankshaft. The firing is This
is called
The provides a richer
air/fuel mixture by carrying out “open-loop” con-
trol when the engine is cold or operating under high load
in order to maintain engine
performance. In addition, when the engine is warm or operat-
ing under normal conditions, the ECM controls
the air/fuel mixture by using the heated oxygen
sensor signal to carry out “closed-loop” control
in order to obtain the theoretical air/fuel mixture
ratio that provides the maximum cleaning per-
formance from the three way catalyst.
coolant temperature and air conditioning load.
In addition, when the air’ conditioning switch
is turned off and on while the
is
the motor operates to adjust the throttle
valve bypass air amount in accordance with
the engine load conditions in order to avoid
fluctuations in the engine speed.
to the engine operating conditions. The ignition
timing is determined by the ECM from the en-
gine speed, intake air volume, engine coolant
temperature and atmospheric pressure.
TSB Revision

Page 519 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (TURBO)
ENGINE>
DIAGNOSTIC TEST MODEl When an abnormality is detected in one
of the sensors or actuators related to emis-
sion control, the CHECK
FUNCTION INDICATOR LAMP

Page 520 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual E N G I N E ( T U R B O )
AND
Engine (Turbo)>
Item
Throttle bodyThrottle bore mm (in.)5 4
Engine control
module (ECM)
Sensors
pressure
egulator
Volume air flow sensor
Barometric

Load next 8 pages

Page: < prev 1-10 ... 481-488 489-496 497-504 505-512 513-520 521-528 529-536 537-544 545-552 ... 2104 next >

fuel fill door release belt oil viscosity USB port alternator spark plugs replace