1991 MITSUBISHI ECLIPSE Service Manual

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 E2T36572
E2T36574
E2T36576
E2T36578
E2T36582
For California E2T3657 1
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 Piezoelectric device type
Top dead center sensorPhoto interrupter type
Crank angle sensorPhoto interrupter type
EGR temperature sensor Thermistor type
Power steering oil pressure switchContact switch type4ctuators
Control relayContact switch type
Resistor identification model No.E8T05873
Injector type and numberElectromagnetic, 4
Injector identification mark N240H
B450L
B390L
Purge control solenoid valveON/OFF type solenoid valve
EGR control solenoid valve Duty cycle type solenoid valve
Fuel pressure control solenoid valve ON/OFF type solenoid valveWaste
gate solenoid valve ON/OFF type solenoid valve

FUEL SYSTEM- Specifications
ItemsSpecifications
Fuel pressure regulator
Regulated pressurekPa (psi) 335 (47.6)
255 (36.3)
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
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

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

14-6FUEL SYSTEM - Special Tools/Troubleshooting
SPECIAL TOOLSNWA-B
Number
M D998742
Name
Hose adapter
Usel Measurement
of fuel pressure (to be usedtogether
with MD9987091
MD998709Adapter hosel Measurement of fuel pressure (to be usedtogether
with MD9987421
TROUBLESHOOTING
When checking and correcting engine troubles, it is
important to start with inspection of the basic
systems.
In case you have such troubles as (1) engine start
failure, (2) rough idling or (3) poor acceleration,
therefore, you should first check the following basic
systems:
(1) Power supply
0 Batteryl
Fusible linkl
Fuse
(2) Body ground
(3) Fuel supplyl
Fuel linel
Fuel filter
l
Fuel pump
N14EBBH
(4) Ignition systeml
Spark plugsl
High tension cablel Distributor
<1.8L Engine>
l
Crank angle sensor <2.0L DOHC Engine>
0 Ignition coil
(5) Emission control systeml
Crankcase ventilation systeml
Exhaust gas recirculation systeml
Vacuum leak
(6) Others
0 Ignition timing
l
Idle speed
Troubles with the MPI system are often caused by
poor contact of harness connector. It is, therefore,
important to check harness connector contact.

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.