air conditioner MITSUBISHI ECLIPSE 1991 Owner's Guide

9-l 08ENGINE <2.0L DOHC Engine> - Timing Belt
.hread diameter
\: 6 x 16(24 x .63)OlAOO45I: 6 x 18 (.24x .70)‘. 6 x 25 (.24 x .98);. 6x28 (.24~1.10) mm (in,)13. INSTALLATION OF TIMING BELT LOWER COVER/
12. TIMING BELT UPPER COVER
F-sThe dimensions of the installation bolts for the timing
covers differ according to the installation location, so be
sure not to install the bolts in the incorrect locations.
8. TENSION ADJUSTMENT OF THE AIR CONDITIONER
COMPRESSOR DRIVE BELT
Refer to GROUP
24-Service Adjustment Procedures.
6. DEFLECTION ADJUSTMENT OF POWER
STEERING OIL .++PUMP DRIVE BELT
Refer to GROUP 1
g-Service Adjustment Procedures.
5.TENSION ADJUSTMENT OF THE ALTERNATOR DRIVE
BELTRefer to GROUP
7-Maintenance Service.

II-20INTAKE AND EXHAUST - Turbocharger
TURBOCHARGER
REMOVAL AND INSTALLATION
II
NHLA-
Pre-removal Operation*Draining Engine Coolant
(Refer to GROUP
0-Maintenance Service.)
*Draining Engine Oil
(Refer to GROUP g-Engine
Adjustment.)1
Po+installation Operationl Flllrng Engine Oil(Refer to GROUP O-Main@
nance Service.)l Filling Engine Coolant(Refer to GROUP O-Mainte-
nance Service.)
12-15 Nm12-15 Nm
9- 11ft.lbs.3
12-15 Nm
9-l 1 ftlbs
moval steps
1. Condenser fan motor assembly< Vehicles with air conditioner >) *4 2. Oxygen sensor3. Engine oil level gauge guide4. O-ring
5. Connection for air intake hose6. Connection for vacuum hose7. Connection for vacuum hose8. Connection for air hose A9. Air outlet fitting
10.Gasket1 1.Heat protector A12. Heat protector B13. Power steering oil pump14. Oil pump bracket15.Self-locking nut16.Engine hanger17.Eye bolt
h-50 Nm29-36 ft.lbs.
19. Connection for water hosel * 20. Connection for water pipe f321. Self-locking nut22. Gasket23. Exhaust manifold24. Exhaust manifold gasket25. Ring26. Gasket
05M1149

INTAKE AND EXHAUST- Exhaust Manifold <2.0L DOHC Engine (Non-Turbo) >11-27
EXHAUST MANIFOLD < 2.0L DOHC Engine (Non-Turbo) >
REMOVAL AND INSTALLATION,lcIii3\
I-**1
steps
1.Condenserfanmotor<Vehicles with air conditioner>
2. Self locking nut3.Gasket
4. Exhaust manifold cover (A)12-15
Nm9- 11 ft.lbs.
06AOl56
5. Oxygen sensor6. Self locking nut
7. Engine hanger
8. Exhaust manifold9. Exhaust manifold gasket
0. Exhaust manifold cover
(B)
NOTE(I) Reverse the removal procedures to reinstall.(2) +* : Refer to “Service Points of Removal”(3) 0 : Non-reusable parts
NllNA6
SERVICE POINTS OF REMOVALNllNSAH
5. REMOVAL OF OXYGEN SENSOR
Disconnect the connector of the oxygen sensor, and installthe special tool
to the oxygen sensor.
Then, using an offset (box-end) wrench, remove the oxygen
sensor.
INSPECTIONNllNCALl
Check the following points; replace the part if a problem is
found.EXHAUST MANIFOLD
Check for damage or cracking of any part.EXHAUST MANIFOLD GASKET
Check for flaking or damage of the gasket.

11-28INTAKE AND EXHAUST - Exhaust Manifold ~2.0~ DOHC Enoine (Turbo)>
EXHAUST MANIFOLD <2.0L DOHC Engine (Turbo)>
REMOVAL AND INSTALLATION
Pre-removal Operation*Draining Engine Coolant(Refer to GROUP O-Mainte-nance Service.)*Draining Engine Oil(Refer to GROUP O-Mainte-nance Service.)
Rennova1 steps
1.Condenser fan motor assembly<Vehicles with air conditioner >Oxygen sensor connectorEngine oil level gauge guideO-ring
\30-40 Nm22-29 ft.lty3. & (
EJ\\=a-50 N
4 .ri29-38 ftk.
,
Post-installation Operation@Filling Engine Oil(Refer to GROUP O-Mainte-nance Service.)@Filling Engine Coolant(Refer to GROUP O-Mainte-nance Service.)NllNA-C
130 25-30 Nmd/18-22 ft.lbs.
;:4.
s5:7.
::10.Ii.12.13.14.15.
Connection for air intake hose
Connection for vacuum hoseConnection for vacuum hoseConnection for air hose AHeat protector AHeat protector 6Power steering oil pumpOil pump bracketSelf-locking nut
Engine hangerEve bolt
16. Gasket17. Connection for water hose
19IBWI 18. Connection for water pipe B19. Self-locking nut20.
Gasket
05Ao15421.
Exhaust manifold22. Exhaust manifold gasket23.
Ring24. Gasket
NOTE(1) Reverse the removal procedures to reinstall.(2) +, : Refer to “Service Points of Removal”.(3) l * : Refer to “Service Points of Installation”(4) m : Non-reusable parts

14-IFUEL SYSTEM
CONTENTS
AUTO-CRUISECONTROLSYSTEM...........................................109AUTO-CRUISECONTROL.......................................................140SERVICEADJUSTMENTPROCEDURES..............................135Accelerator Cable, Throttle Cable and Auto-cruise
ControlCableInspectionandAdjustment........................136Auto-cruise
ControlSystemInspection.............................135lndrvrdualPartsInspection..................................................137SPECIFICATIONS.....................................................................109GeneralSpecifications.......................................................109ServiceSpecifications
.........................................................109Torque Specrfications..........................................................109TROUBLESHOOTING...............................................................110Auto-CruiseControlCircurt................................................128Auto-cruise
ControlComponentsLocation........................126Auto-cruise Control Related Harnesses
.............................125Check Chart
........................................................................114Input Check.........................................................................123Self-diagnosis
Check..........................................................121Troubleshootrng
Quick-referenceChart..............................110ENGINECONTROL.......................................................................105ENGINECONTROL..................................................................107--SERVICEADJUSTMENTPROCEDURES..............................106Accelerator Cable Inspection and Adjustment..................106Accelerator Switch Inspectron and Adjustment................106SPECIFICATIONS.....................................................................105Lubricants.............................................................................105Sealant.................................................................................105ServiceSpecifications
..........................................................105TorqueSpecifications..........................................................105TROUBLESHOOTING...............................................................105FUELSYSTEM..............................................................................2FUELFILTER............................................................................104FUELLINEANDVAPORLINE..............................................102FUEL PUMP, FUEL GAUGE UNIT ANDOVERFILL LIMITER(TWO-WAY VALVE)<AWD>.............101FUEL PUMP, FUEL GAUGE UNIT ANDOVERFILL LIMITER (TWO-WAY VALVE)<FWD>.............99FUELTANK<AWD>.............................................................97FUELTANK<FWD>..............................................................93INJECTOR.................................................................................83MPISYSTEMINSPECTION<1.8LEngine>.......................56AirConditioner
Switch........................................................64Air Conditioner Power Relay
..............................................67Components
Location......................................................56
ControlRelay
.................................................................66EGRControlSolenoidValve...............................................67EGRTemperatureSensor..................................................64Engine Coolant Temperature Sensor
.................................62IdlePosrtionSwitch
...........................................................63IdleSpeedControlServo
.............................
....................65InhibitorSwitch....................................................................65hjeCtOrS................................................................................65IntakeAirTemperatureSensor..........................................6’2MalfunctionlndtcatorLight
..........................................58MotorPosition
Sensor................................................63OxygenSensor
.................................................................64Power Steering 011 Pressure Swatch...........................65PowerTransistor
................................................................67PurgeControlSolenoidValve.........................................67
Self-Diagnosis.......................................................................
ThrottlePositronSensor.....................................................
Vehicle Speed Sensor.........................................................MPI
SYSTEMINSPECTION<2.0L DOHCEngine>...........Air Conditioner Power Relay..............................................
Arr Conditioner Swatch........................................................
Components Location
.........................................................
Control
Relay.......................................................................
EGR Control Solenoid Valve...............................................
EGR Temperature Sensor
...................................................
Engine Coolant Temperature Sensor
.................................Fuel Pressure Control Valve...............................................
Idle Position Switch
............................................................
Idle
SpeedControlServo...................................................Injectors
................................................................................
Intake Air Temperature Sensor..........................................
Malfunction Indicator Light.................................................
Oxygen Sensor
....................................................................
Power
Steering
OilPressureSwitch.................................Power Transistor
.................................................................
Purge Control Solenoid Valve.............................................
Self-Diaanosis.......................................................................
58
63
2382
79
688182
79
7682
77
79
79
76
727879
82
8273ThrottletiPosition Sensor
.....................................................77Vehicle Speed Sensor
.........................................................79SERVICE ADJUSTMENT PROCEDURES<1.8L Engine>........................................................................41Curb Idle Speed Inspection
................................................41EGR Valve Control Vacuum Check....................................47Fuel Pressure Test
..............................................................44Fuel Pump Operation Check
..............................................44Idle Speed Control and Throttle Position
Sensor Adjustment
..............................................................
41Purge Port Vacuum Check
.................................................47Release of Residual Pressure from
High Pressure Fuel Hose
...................................................
44Throttle
Body(Throttle Valve Area)Cleaning....................43SERVICE ADJUSTMENT PROCEDURES<2.0LDOHCEngine>............................................................48Basic Idle Speed Adjustment
.............................................
48
Curb Idle Speed Inspection
................................................48EGR Valve Control Vacuum Check....................................55Fuel Pressure Test
..............................................................52Fuel Pump Operation Check
..............................................51Idle Position Switch Adjustment........................................52Purge Port Vacuum Check
.................................................55Release of Residual Pressure from
High Pressure Fuel Hose
...................................................51Throttle Body (Throttle Valve Area) Cleaning....................51ThrottlePositionSensorAdjustment.................................50SPECIALTOOLS......................................................................6SPECIFICATIONS.....................................................................2GeneralSpecifications.........................................................2Sealant and Adhesive
.........................................................5Service Specifications
..........................................................4Torque Specifications
..........................................................5THROlTLEBODY<1.8LEngine>........................................85THROlTLE BODY <2.0L DOHC Engine>............................89TROUBLESHOOTING...............................................................6

FUEL SYSTEM- Specifications
ItemsSpecifications
Fuel pressure regulator
Regulated pressurekPa (psi) <Non-Turbo>335 (47.6)<Turbo-M/T>
255 (36.3)
<Turbo&T>300 (42.7)
SERVICE SPECIFICATIONS
<1.8L Engine>N14CB-
ItemsSpecifications
Basic ignition timing~
Curb idle speedvm
, Idle speed when air conditioner is onrpm
Basic idle speedwm
Throttle position sensor adjusting voltageV
Throttle position sensor resistancekQMotor position
sensor resistancek&
Idle speed control servo motor coil resistance
Intake air temperature sensor resistancekQ
Engine coolant temperature sensor resistance
20°C (68°F)
80°C (176°F)
Fuel pressurekPa (psi)
Vacuum hose disconnection
Vacuum hose connection
Iniectnr coil resistance Q
52
k8
5”BTDC at curb idle
700f 100
850 at neutral position
650 at D range <A/T>
700 f 50
0.48-0.52 at curb idle
3.5-6.5
4-6
5-35 [at 20°C (68”F)l
2.7 [at 20°C (68”F)I
2.5
0.3
330-350 (47-50) at curb idleApprox.
270 (38) at curb idle
13-16 [at 20°C (68”F)l
<2.0L DOHC Engine>
Items( Specifications
Basic ignition timing
Curb idle speedrpm
Idle speed when air conditioner is onrpm
<M/T>
al-r>
Basic idle speedrpm
Throttle position sensor adjustment voltageVThrottle position
sensor resistancekQ
Idle speed control servo (stepper motor) coil resistance
Intake air temperature sensor resistancekQ
Engine coolant temperature sensor resistancek0
20°C (68°F)
80°C (176°F)
Fuel pressurekPa (psi)
Vacuum hose disconnection <Non-Turbo>
<Turbo-M/l>
<Turbo-m>
Vacuum hose connection <Non-Turbo><Turbo-M/T>
<Turbo-A/l>
Q
5”+ 2”BTDC at curb idle
750+ 100
850 at neutral position
650 at D range
750 f 50
0.48-0.52 at curb idle
3.5-6.5
28-33 [at 20°C (68”F)l
2.7 [at 20°C (68”F)I
2.5
0.3
330-350 (47-50) at curb idle
250-270 (36-38) at curb idle
290-320 (41-46) at curb idleApprox.
270 (38) at curb idle
Approx. 190 (27) at curb idle
Approx. 230 (33) at curb idle

FUEL SYSTEM - Troubleshooting14-7
Symptom
Engine will not startor start too hard(Cranks OK)
Rough idle or engine
stumbles
Trouble in the MPI systemCheck for output of self-diagnosis
code.Read the code with a voltmeter.Malfunction
of the fuel pump drive control systemCheck the fuel pump drive controlsystem
and the fuel pump.Malfunction
of the ignition timing control systemMalfunction
of the power transistor
Check the ignition timing.
Check the power transistor as a single
unit.
Power is not supplied to the engine control unit.Check the power supply circuit.Malfunction
of the control relayMalfunction
of the injector
Replace.
Check the injector drive circuit.
Check the injector as a single unit.
The fuel pressure is not proper.Check the fuel pressure.
I
Vacuum hose disconnected or damagedRepair or replace.IMalfunction of
the engine control unit) Replace.
Wire breakage or short circuit occurs in theRepair or replace.
harness, or the connector is improperly connected.
Trouble in the MPI systemCheck for output of self-diagnosis
code.Read the code with a voltmeter.Malfunction
of the sensor
l Intake air temperature sensor
Check the sensor-related circuit.
Check the sensor as a single unit
Probable causeRemedy
l Engine coolant temperature sensorl Barometric pressure sensor
l Ignition switchl Idle position switchl Throttle position sensorl No. 1 cylinder TDC sensor, crank angle sensor
<I .8L Engine>l TDC sensor, crank angle sensor<2.0L DOHC Engine>
l Power steering oil pressure switch
l Air conditioner switch
l Inhibitor switch <A/T>l Motor position sensor <1.8L Engine>l Air flow sensor0 Oxygen sensorMalfunction of the engine control system
l
Stepper motor <2.0L DOHC Engine>l Injector0 Power transistor
Check the actuator-related circuit.Check the actuator as a single unit.

14-8FUEL SYSTEM - Troubleshootingiymptom
<ough idle or engine
#table
Probable causeMalfunction
of the vehicle speed reed switch
Remedy
Check the vehicle speed reed switch.
The fuel pressure is not proper.Check the fuel pressure.
Vacuum hose disconnected or damaged.Repair or replace.Malfunction
of the engine control unit.Replace.
Wire breakage or short circuit occurs in theRepair or replace.
harness, or the connector is improperly connected.
.ngine hesrtates oroor accelerationTrouble in the MPI systemCheck for output of self-diagnosiscode.Read the code with a voltmeter.
Malfunction of the sensorl Intake air temperature sensor
l Engine coolant temperature sensor
l Barometric pressure sensorl Ignition switch
l Idle position switchl Throttle position sensor
Check the sensor-related circuit.Check the sensor as a single unit.l
No. 1 cylinder TDC sensor, crank angle sensor<I .8L Engine>
l TDC sensor, crank angle sensor<2.0L DOHC Engine>
l Power steering oil pressure switchl Air conditioner switchl Inhibitor switch <A/T>l Motor position sensor <I .8L Engine>
l Air flow sensor
l Oxygen sensorMalfunction
of the engine control system
l
Stepper motor <2.0L DOHC Engine>
0 Injector0 Power transistor
Check the actuator-related circuit.
Check the actuator as a single unit.Malfunction
of the air conditioner power relayCheck the system, and the compo-
control systemnents if the system is found defective.
The fuel pressure is not proper.Check the fuel pressure.
Vacuum hose disconnected or damaged.Repair or replace.Malfunction
of the engine control unit.Replace.
Wrre breakage or short circuit occurs in theRepair or replace.
harness, or the connector is improperly connected.

FUEL SYSTEM - Troubleshooting14-S
Symptom
Poor fuel mileage,
Probable cause
Trouble In the MPI system
Remedy
Check for output of self-diagnosis
code.Read the code with a voltmeter.Malfunction
of the sensorl Intake air temperature sensorl Engine coolant temperature sensorl Barometric pressure sensorl Ignition switchl Idle position switch
l Throttle position sensorl No. 1 cylinder TDC sensor, crank angle sensor
Check the sensor-related circuit.Check the sensor as a single unit.
<I .8L Engine>l TDC sensor, crank angle sensor<2.0L DOHC Engine>
l Power steering oil pressure switch
l Air conditioner switch
l lnhrbrtor switch <A/T>l Motor
position sensor <I .8L Engine>
l Air flow sensor
0 Oxygen sensor
Malfunction of the engine control system
l Stepper motor <2.0L DOHC Engine>
0 Injector0 Power transistor
Check the actuator-related circurt.Check the actuator as a single unit.
The fuel pressure is not proper.Check the fuel pressure.

CONTROL FUNCTIONS
<1.8L Engine>
NWEEE- -
FunctionAir-fuelIgnitionIdleAir con-FuelPurgeEGRmixture
timingspeedditionercontrol
controlcontrolpower“d”,i2controlcontrol
relaycontrol
Functional elements
control
In-Power supplyXXXXXXX
Put(Ignition switch coupled)
Power supply (battery backup)
XXXXXXXAir flow sensor
XXXX
lgnitron switch ST terminalXXX(start srgnal)Power
steenng oil pressure switchX
Jut- InjectorXlutIdle speed control servoXPower transistor
X
Arr conditioner power relayX
Control relayX
Purge control solenord valveX
EGR control solenoid valveX<California>
NOTE*: <A/T>
FUEL SYSTEM - Troubleshooting