1991 MITSUBISHI ECLIPSE lock

14-52FUEL SYSTEM - Service Adjustment Procedures <2.0L Engine>
IDLE POSITION SWITCH ADJUSTMENT
Caution
N14UDAThe idle position switch has been adjusted by the manu-
facturer.Do not, therefore, disturb the setting of the idle-position
switch.
If the setting is disturbed as a result of carelessness, or if
the idle-position switch is replaced, make the necessary
setting as described below.
(1) Sufficiently loosen the tension of the accelerator cable.
(2) Disconnect the connector of the idle position switch (fixed
speed adjusting screw).
(3) Loosen the lock nut of the idle position switch (fixed speed
adjusting screw).
(4) Sufficiently loosen the idle position switch by turning it in
the counterclockwise direction and fully close the throttle
valve.Caution
Be sure to completely close the throttle valve.
(5) Connect a tester (ohm range) between the switch’s
terminal and the body.
(6) Turn down the idle position switch until it enter the “ON”
state where the switch establishes a continuity to body
(this point is called “touch point”). Turn the switch down
15/16 of a turn more from that point.
NOTEThe “touch point” refers to the point where the throttle
valve begins opening.
(7) While holding the idle position switch to make sure that it
does not turn, tighten the lock nut.
(8) Adjust the accelerator cable.
(9) Adjust the basic idle speed. (Refer to P.14-48.)
(lO)Setting the throttle position sensor.
FUEL PRESSURE TESTN14FNAO(1) Reduce the fuel pressure in the fuel line.
(Refer to
P.14-44.)(2) Disconnect the high pressure fuel hose from the delivery
pipe.Caution
Cover the hose connection with shop towel to prevent
splash of fuel that could be caused by residual pressurein the fuel pipe line.
(3) Remove the throttle body stay.

14-64FUEL SYSTEM -MPI System Inspection <1.8L Engine>
Idle speed controlservo connector
6FU098t(3) Disconnect the idle speed control servo connector.
(4) Connect DC
6V between terminals @) and @ of the idle
speed control servo connector, and then measure the
resistance between terminals
@ and @ of the motor
position sensor connector when the idle speed control
servo is activated (caused to expand and contract).
Standard value: Smooth increase/decrease in accord-
ance with extension and retraction of
idle speed control servo plunger.
Caution
Apply only a 6V DC or lower voltage. Application of
higher voltage could cause locking of the servo gears.
(5) If there is a deviation from the standard value, or if the
change is not smooth, replace the idle speed control servo
assembly.
OXYGEN SENSORN14QDBAb
INSPECTIONCaution
1. Before checking, warm up the engine until engine
coolant temperature reaches 85 to
95°C (185 to 205°F).2. Use an accurate digital voltmeter.
(1) Disconnect the oxygen sensor connector and connect a
voltmeter to the oxygen sensor connector.
(2) While repeating engine racing, measure the oxygen sensor
output voltage.
EngineOxygen sensor
output voltageRemarks
Race0.6- 1 .OVMake air-fuel mixture
rich by accelerator
operation
NOTEFor removal and installation of the oxygen sensor, refer
toGROUP 11
- Exhaust Manifold.
Oxygen sensor installation torque:
40
-50 Nm (30 - 36 klbs.)
EGR TEMPERATURE SENSOR NIIRCHA~Refer to GROUP 25
- Exhaust Gas Recirculation System.
VEHICLE SPEED SENSORN14QEEBaRefer to GROUP 8
- Meters and Gauges.
AIR CONDITIONER SWITCHRefer to GROUP 8
- Column Switch.
N14QQABa

14-66FUEL SYSTEM -MPI System Inspection 4.8L Engine>
6FU1253
-1 Batterv
I6FUO751
03AOO50
03AOO57(3) Connect
6V DC between terminal @ and terminal @ of the
idle speed control servo connector, and check to be sure
that the idle speed control servo operates.
CautionApply only a 6V DC or lower voltage. Application of
higher voltage could cause locking of the servo gears.
(4)
If not, replace idle speed control servo as an assembly.
CONTROL RELAY
INSPECTION
NWWAE(1) Remove the control relay.
(2) Inspect the continuity between the control relay terminals.
Inspection terminalsContinuity
l---$+-l Yes (approx. 9552)
B-0
@-@
~~~
Yes (approx. 35Q)
Yes in 1 direction only(3) Use jumper wires and connect control relay terminal
@ to
the battery
@ terminal and terminal @ to the battery @
terminal.Caution
Be very careful when connecting the jumper wires
because the relay will be damaged if a mistake is made
with the contact terminals.
(4) With the battery
0 terminal jumper wire connected and
disconnected, check the continuity between control relay
terminals @-@I.
Continuity between terminals 0-B(5) Use jumper wires to connect control relay terminal
@I to
the battery
@ terminal and terminal @ to the battery 0
terminal.(6) With the battery
0 terminal jumper wire connected and
disconnected, check the continuity between control relay
terminals @-@I.
Continuity between terminals 0-a
1(7) Replace the control relay if faulty.

14-82FUEL SYSTEM - MPI System Inspection <2.0L DOHC Engine>
\ \\I \3FUO352
,\ \
\I \3FUO353
,\ ‘\R/
\ \\I \3FUo354
POWER TRANSISTORRefer to GROUP 8
- Ignition System
NlIAcQAl
a-4
AIR CONDITIONER POWER RELAYN14NCl.a -Refer to GROUP 24
- Air Conditioner.
PURGE CONTROL SOLENOID VALVEN14RCKARefer to GROUP 25
- Evaporative Emission Control System.
EGR CONTROL SOLENOID VALVE
N14NCURefer to GROUP 25
- Exhaust Gas Recirculation System.
FUEL PRESSURE CONTROL VALVE
OPERATIONAL CHECK
NOTEBefore the vacuum hoses are removed, make a mark’on the
-
hose for visual identification so that they can be reconnected in,their original positions.
(1) Remove the vacuum hoses (blue stripes and black) from
the solenoid valve.
(2) Disconnect the harness connector.
(3) Apply vacuum with a hand vacuum pump to the nipple to
which the black vacuum hose was connected and check for
air tightness both when a voltage is applied to the solenoidvalve terminal and when the voltage is removed.
Battery voltageOther nipple of
solenoid valveNormal condition
When voltage
is removed
When voltage
is applied
OpenVacuum leaks
Blocked by fingerVacuum is retained
OpenVacuum is retainedCHECKING
COIL RESISTANCE
Measure the coil resistance with a tester.
Standard resistance: 36
- 46 R [at 20°C (68”F)]

FUEL SYSTEM - Throttle Bodv <1.8L Engine>
Throttle position
sensor connectorINSPECTIONN14SHAC4
THROTTLE POSITION SENSOR CONTINUITY CHECK
(1) Measure resistance between terminals
@ and @ of the
throttle position sensor using a circuit tester.
Standard value: 3.5-6.5
kSZ(2) Check sensor body for cracks and damages.
6FU1398
I
control servo
connector
6FU1277
IIDLE SPEED CONTROL SERVO OPERATION INSPECTIONIDLE SPEED CONTROL SERVO CONTINUITY CHECK
Measure resistance between terminals @and @ using a circuittester.
Standard value: 5-35
Q [at 20°C (68”F)I
CautionApply only a 6V DC or lower voltage. Application of higher
voltage could cause locking of the servo gears.
(1) Connect 6V DC to terminals @ and @ and check that the
idle speed control servo extends and retracts by itself.
Idle speed controlservo motion
I
IWhen terminal @ is @(RetractsI
IWhen terminal @ is @)ExtendsI(2) If the idle speed control servo does not move, replace the
idle speed control servo assembly.
THROTTLE BODY COMPONENTS CLEANING
(1) Clean all components, but the following components must
not be cleaned by using a cleaning agent.
l Throttle position sensor
l Idle speed control servo assembly
The insulation of these components will be damaged if theyare immersed in a cleaning agent. They should be cleaned
by using only a piece of cloth.
(2) Check for clogging of the vacuum port or passage. Clean
the vacuum passage by using compressed air.

FUEL SYSTEM - Fuel Tank
FUEL TANK cFWD>
,*. REMOVAL AND INSTALLATION
q?&g
NlMA-30-40 Nm
2-3 Nm22-29 ft.lbs.
---15-20 Nm
11-14 ft.lbs.
15-22 ft.lbs.Removal steps
l + 1. Return hosel +2. Vapor hose
3. Clamp
4. Fuel gauge unit connector
5. Electrical fuel pump connector
l + l q6. High pressure fuel hose
l + 7. Filler hose
l + 8. Vapor hose
~~ 9. Self-locking nut10. Tank band11. Fuel tank
l + 12. Vapor hosel + 13. Overfill limiter (Two-way valve)I)+ 14. Fuel gauge unitl + 15. Electrical fuel pump16. Drain plug
17. Fuel tank cap
18. Packing
19. Fuel filler neck$TEeverse the removal procedures to reinstall,(2) +e : Refer to “Service Points of Removal”:,,
(3) *+ : Refer to “Service Points of lnstallatlon .(4) m : Non-reusable parts

FUEL SYSTEM - Fuel Tank
W304I I
I03FDO7 1
Tank band
03AO229
I I\ \\u\ I \I-
03AO189
?4-.03FOO7A 13’. INSTALLATION OF OVERFILL LIMITER (TWO-WAY
VALVE)
Install so that the overfill limiter is facing in the direction
shown in the figure.
12. CONNECTION OF VAPOR
HOSE/l. RETURN HOSE
When attaching the fuel hose to the pipe, be sure that the
hose is attached as shown in the illustration.
Standard value:
25-30 mm (l&1.2 t@.).”. .9. INSTALLATION OF SELF-LOCKING NUT
Tighten the self-locking nuts until the rear end of the tank
band contacts the body.
6. CONNECTION OF VAPOR
HOSE/7. FILLER HOSE
(1) The vapor hose should be connected all the way at the
tank, and approximately 40 mm (1.6 in.) at the filler
neck.(2) The end of the filler hose with the shorter straight pipe
part should be connected at the tank side.

FUEL SYSTEM - Fuel Tank
FUEL TANK
i. REMOVAL AND INSTALLATION
N140A-A
_-Pre-removal Operation
eDraining of the fuel.@Release of Residual Pressure from High
Pressure Fuel Hose(Refer to
P.14-44.)Post-installation Operation
*Measurement of Fuel Pressure(Refer to P.14-44, 52.)l .Supplving of the Fuel.
1-2 Nm825-35 Nm
‘*-*: ft-‘bs*
9-14 Nm- 7-10 ft.lbs.-9
-7
03AO262
15-20 Nm
11-14 ftlbs.Removal steps
1. Fuel tankcap2. Packing
3. Drain plug4. Return hose
5. Vapor hose
4*6. High pressure fuel hose
7. Fuel filler hose
8. Cable band9. Protector
10. Vapor pipe11. Vapor hose
l 4 12. Hole cover13. Self-locking nut
14. Fuel tank
15. Overfill limiter (Two-way valve)
l + 16. Fuel pump and fuel gauge unit assembly
17. Fuel filler neck
FyTEeverse the removal procedures to reinstall.(2) ~~ : Refer to “Service Points of RemoveI”.(3) l + : Refer to “Service Points of Installation”.(4) m : Non-reusable parts