engine coolant MITSUBISHI ECLIPSE 1991 Workshop Manual
[x] Cancel search | Manufacturer: MITSUBISHI, Model Year: 1991, Model line: ECLIPSE, Model: MITSUBISHI ECLIPSE 1991Pages: 1216, PDF Size: 67.42 MB
Page 457 of 1216
FUEL SYSTEM - Specifications14-3
<2.0L DOHC Engine>
ItemsSpecifications
Fuel
Tank capacityliter (gal.) 60 (15.9)
Return systemEquipped
FilterHigh pressure type
Fuel pump
TypeElectrical, in-tank type
Driven byElectric motor
Throttle bodyThrottle
boremm (in.) 60 (2.36)Throttle position
sensorVariable resistor type
Idle speed control servoStepper motor type
The stepper motor type by- ass air controlsystem with the Fast Idle6!rr Valve (FIAV)
Idle position switchContact switch type
Engine control unitIdentification
model No.
For Federal
E2T36574
E2T36576
E2T36578
E2T36582
For California
E2T36573
E2T36575
E2T36577
E2T36581
SensorsAir flow
sensorKarman vortex type
Barometric pressure sensorSemiconductor diffusion-type
Intake air temperature sensorThermistor type
Engine coolant temperature sensorThermistor type
Oxygen sensorZirconia type
Vehicle-speed sensorReed switch typeDetonation
sensor
Top dead center sensorPhoto interrupter type
Crank angle sensorPhoto interrupter type
EGR temperature sensor
Power steering oil pressure switchContact switch type4ctuators
Control relayContact switch type
Resistor identification model No.E8T05873
Injector type and numberElectromagnetic, 4
Injector identification mark
B450L
B390L
Purge control solenoid valveON/OFF type solenoid valve
EGR control solenoid valve
Fuel pressure control solenoid valve
gate solenoid valve
Page 458 of 1216
FUEL SYSTEM- Specifications
ItemsSpecifications
Fuel pressure regulator
Regulated pressurekPa (psi)
255 (36.3)
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
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
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
Vacuum hose connection
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
Page 459 of 1216
FUEL SYSTEM - SDecifications14-5
-.
Items
Injector coil resistance52
Specifications
13-I 6 [at 20°C (68”F)j
2-3 [at 20°C (68”F)I
TORQUE SPECIFICATIONSN14CC-A
,,-
ItemsINm1 ft.lbs.
Center cover
Oxygen sensor
Engine coolant temperature sensor
Throttle position sensor attaching screws
Idle speed control servo attaching screws <2.0L DOHC Engine>
Delivery pipe mounting bolts
High-pressure fuel hose to delivery pipe
Fuel pressure regulator to delivery pipe
<1.8L Engine>
<2.0L DOHC Engine>
Accelerator cable clamp
Throttle body mounting bolts and nuts
Throttle body stay mounting nut
4ccelerator cable adjusting bolts
Lateral rod attaching bolt
Self-locking nut
Fuel tank drain plug
Electrical fuel pump
Screws
Bolt (at lower side)Gel
gauge unit mounting screws
-ligh pressure hose to electrical fuel pump
iigh pressure hose to fuel main pipe
3attery tray to battery
3attery tray mounting boltGel
main pipe to fuel filter
Zye boltGel filter
mounting bolts
%el pipes clip attaching bolt
Japor pipe assembly mounting bolt
Ianister holder mounting bolt
2.5-3.5
40-50
20-40
1.5-2.5
2.5-4.5
IO-13
4-6
7-l 15-8
8-106-7
IO-137-9
15-2211-16
15-2211-16
4-63-4
80-l 0057-72
21-3115-22
15-2011-14
2-3
9-14
2-3
30-40
30-40
2-3
9-14
30-40
25-35
9-14
9-14
9-14
9-14
2-3
30-36
15-29
1.1-1.8
1.8-3.3
7-9
3-4
1.4-2.2
6.5-10
1.4-2.2
22-29
22-29
1.5-2
7-14
22-29
18-25
7-10
7-10
7-10
7-10
SEALANT AND ADHESIVENMCE-A
Items
Engine coolant temperature sensor threaded portion
Fuel tank hole cover
Specified sealant
MOPAR Part No.4318034 or equivalent
MOPAR Rope Caulk Sealer 3/l 6 x 80” roll Part No.4026044 or equivalent
Page 461 of 1216
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
l TDC sensor, crank angle sensor<2.0L DOHC Engine>
l Power steering oil pressure switch
l Air conditioner switch
l Inhibitor switch 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.
Page 462 of 1216
14-8FUEL SYSTEM - Troubleshootingiymptom
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
l TDC sensor, crank angle sensor<2.0L DOHC Engine>
l Power steering oil pressure switchl Air conditioner switchl Inhibitor switch l Motor position sensor
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.
Page 463 of 1216
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.
l TDC sensor, crank angle sensor<2.0L DOHC Engine>
l Power steering oil pressure switch
l Air conditioner switch
l lnhrbrtor switch l Motor
position sensor
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.
Page 484 of 1216
FUEL SYSTEM - Traubleshootinn
ZUB FUSII
c-50
103
ELC 4-SPEEDAUTOMATICTRANSAXLECONTROL UNIT
1
ENGINECOOLANTTEMPERATURESWITCH
ICQ
C-64
I
KX3S-AC-UOSi’7B-NC
Page 495 of 1216
FUEL SYSTEM - Service Adjustment Procedures <1.8L Engine>l-4-41
SERVICE ADJUSTMENT PROCEDURES
CURB IDLE SPEED INSPECTION
CautionNlIFiiAE
The improper setting (throttle valve opening) will increase
exhaust gas temperature at deceleration, reducing catalystlife greatly and deteriorating exhaust gas cleaning per-
formance. It also has effect on fuel consumption and
engine braking.
ilter
Paper clip
16A0898
PI-e-conditions for inspection
0Engine coolant temperature: 85-95°C (185-205°F)
0Lights, electric cooling fan and accessories: OFF
l Transaxle: Neutral
(P for vehicles with an automatic
transaxle)l Steering wheel: Neutral position (vehicles with a power
steering)l Check ignition timing and adjust if necessary. Refer to
GROUP 8.
NOTEWith vehicles for Canada, the headlights and taillights, etc.
remain on even when the lighting switch is turned OFF, but thiscauses no problems during inspection.
(1) Insert the paper clip to the connector.
(2) Connect the tachometer to the inserted clip.
(3)Run the engine for more than 5 seconds at an engine speedof 2,000 to 3,000 rpm.
(4) Run the engine at idle for 2 minutes.
(5) Read the idling rpm. If it is not within the specified speed,
check the idle speed control system.
Curb idle speed: 700
f 100 rpm
NOTEAdjustment of the idling speed is usually unnecessary,
because this system controls the idling speed.
IDLE SPEED CONTROL AND
THROTlLE POSI-
TION SENSOR ADJUSTMENT
N14FIATAdjustment conditions
l Engine coolant temperature:
85-95X (185-205°F)
l Lights, electric cooling fan and accessories: Set to OFF
l Transaxle: Neutral (P for vehicles with an automatic
transaxle)l Steering wheel: Neutral position (vehicles with a power
steering)
(1) Slacken the accelerator cable enough.
(2) Connect a tachometer.
Page 501 of 1216
FUEL SYSTEM - Service Adjustment Procedures <1.8L Engine>14-47
A
E3x>
/ )Engine speed
(rpm)1 FU446Engine speed (rpm)
>3FU262EGR VALVE CONTROL VACUUM CHECK
Check ConditionEngine coolant temperature: 85-‘95”C (185-205°F)
(1) Disconnect the vacuum hose from the throttle body EGR
vacuum nipple and connect a hand vacuum pump to the
nipple.(2) Start the engine and check to see that, after raising the
engine speed by racing the engine, vacuum raises pro-
portionately with the rise in engine speed.
NOTEIf there is a problem with the change in vacuum, it is
possible that the throttle body port may be clogged and
require cleaning.
PURGE PORT VACUUM CHECKCheck ConditionN14FvBcEngine coolant temperature:
85-95°C (185-205°F)
(1) Disconnect the vacuum hose from the throttle body purge
hose nipple and connect a hand vacuum pump to the
nipple.(2) Start the engine and check to see that, after raising the
engine speed by racing the engine, vacuum remains fairly
constant.NOTE
If there is no vacuum created, it is possible that the throttlebody port may be clogged and require cleaning.
Page 502 of 1216
14-48FUEL SYSTEM - Service Adjustment Procedures <2.0L Engine>
SERVICE ADJUSTMENT PROCEDURES
<2.0L DOHC Engine>
CURB IDLE SPEED INSPECTION
Caution
N14FHADThe improper setting (throttle valve opening) will increase
exhaust gas temperature at deceleration, reducing
catalys-tic converter life greatly and deteriorating exhaust gas
cleaning performance. It also has effect on fuel ‘consump-
tion and engine braking.
Pre-conditions for inspection
l Engine coolant temperature:
85-95°C (185-205°F)
l Lights, electric cooling fan and accessories: OFF
lTransaxle: Neutral (P for vehicles with automatic transaxle)l Steering wheel: Neutral position (vehicles with a power-
steering)l Check ignition timing and adjust if necessary. Refer to
GROUP 8.
NOTEWith vehicles for Canada, the headlights and taillights, etc.
remain on even when the lighting switch is turned OFF, but thiscauses no problems during inspection.
(1) Connect the tachometer to the engine speed detection
terminal.
(2)Run the engine for more than 5 seconds at an engine speedof 2,000 to 3,000 rpm.
(3) Run the engine at idle for 2 minutes.
(4) Read the idling rpm. If it is not within the specified speed,
check the idle speed control system.
Curb idle speed:
750f 100 rpm
NOTE1. Adjustment of the idling speed is usually unnecessary,
because this system controls the idling speed.
2.For rpm, one-half of the actual engine rpm is indicated,so the actual engine rpm is two times the indicated
value shown by the tachometer.
BASIC IDLE SPEED ADJUSTMENT
N14FHBIPre-conditions for inspection
l Engine coolant temperature:
85-95°C (185-205°F)
l Lights, electric cooling fan, and accessories: OFF
lTransaxle: Neutral (P for vehicles with automatic transaxle)l Steerig wheel: Neutral position (vehicles with a
power-
steering)(1) Connect a tachometer.