fuel pump MITSUBISHI GALANT 1989 Service Owner's Guide

FUEL SYSTEM - Fuel Tank13-109
FUEL TANK MlSGA-
{EMOVAL AND INSTALLATION
r
30-40 N

m
22-?9
ft.lbs.
2-3 Nm
1.4-2.2,ft.lbs.IP
2-3 N
m
1.4-2.2 f-Lit
6.5-10
ft.lbs.
!I17-26 N

m
12- 19
ft.lbs.
Removal steps 1. Fuel tank filler tube cap
2. Drain plug
l + 3. Return hosel + 4. Vapor hose5. Fuel gauge unit connector
6. Electrical fuel pump connector
l +7. High pressure hose to fuel pump connection
l + 8. Filler hosel +9. Vapor hosel + 10. Self-locking nut11, Tank band stay12. Tank band13. Fuel tankl 4 14. Vapor hosee+ 15. Fuel tank pressure control valve
16. Fuel gauge unit
17. Electrical fuel pump
18. Fuel tnak filler tube
i8
03A0142
Caution
When disconnecting the high pressure fuel hose, cover
the hose connection with rags to prevent splash of fuel that could be caused by some residual pressure in the
fuel pipe line.
TSB Revision

FUEL SYSTEM - Fuel Tank13-111
03R0297
Vapor hose
mmin.)Fillerhose
i2.l
B
3FOO7
A
1
Flare nut
Skure side
03Yo43
9. CONNECTION OF VAPOR HOSE/8. FILLER HOSE
(1) The vapor hose should be connected all the way at the tank, and approximately 40 mm (1.6 in.) at the fuel tank
filler tube.
(2) The end of the filler hose with the shorter straight pipe
part should be connected at the tank side.
7. CONNECTION OF HIGH PRESSURE HOSE TO FUEL PUMP
Temporarily tighten the flare nut by hand, and then tightenit to the specified torque, being careful that the fuel hose
does not become twisted.
Caution
When tightening flare nut, be careful not to bend or
twist line to prevent damage to fuel pump low connec-
tion.
FUEL PUMP REPLACEMENT
(1) Disconnect the fuel pump connector.
(2) Remove the fuel tank filler tube cap.
(3) Drain the fuel. MllGFAC
(4)
Disconnect the fuel high pressure hose and main pipe.
Caution
Cover the hose connection with rags to prevent splash
of fuel that could be caused by some residual pressure in the
fuel. pipe line.
(5) Loosen the self-locking nuts to the end of the stud bolt.
(6) Disconnect the lateral rod right side body coupling; then lower the lateral rod and use wire or similar material to
suspend from the axle beam.
(7) For models equipped with the ACTIVE-Electronic Control Suspension
(E.C.S.) disconnect the rear height sensor and
the lateral rod. (Refer to GROUP
33B-Service Adjustment
Procedures.)

13-112FUEL SYSTEM VALVE> - Fuel Tank
03L0018
QcD ua .
CFa
cc
0c aa0u0aa
Positioning projection
03L0009
(8) Remove
the fuel pump installation screws and the bolt for
holding the fuel pump (at the lower side of the fuel tank),
and then remove the fuel pump from the fuel tank.
(9) Align the three positioning projections of the packing with the holes in the fuel pump.
(lO)When the fuel pump is installed, the holding bolt at the lower side of the fuel tank should be installed first.
Care should be taken at this time that the O-ring is not
pinched.
(1 l)For models equipped with the ACTIVE-E.C.S., check the operation of the ACTIVE-E.C.S. after installation of the rearheight sensor. (Refer to GROUP
33B-Service AdjustmentPrnrwiI irps II I ““VW-. W.S.,
1 TSB Revision

FUEL SYSTEM VALVE> -Fuel Line and Vapor Line/Fuel Filter 13-115
Higt
fuel
&ring Oi’
FUEL FILTER
REMOVAL AND INSTALLATION
~zgz&i&r” 1@Release of Residual Pressure from High
2. INSTALLATION OF HIGH PRESSURE FUEL HOSE
Apply engine oil to the hose union.Insert the hose, being careful not to damage the O-ring, and
tighten securely.
Caution Because there is high pressure applied between the
fuel pump and the injection mixer, be especially sure
that there is no fuel leakage in this area.
25-35 N
m
18-25
ft.lbs.
Post-installation Operation@Measurement of Fuel Pressure
Fuel filter removal steps
1. Eye bolt (Refer to P.13-114.)2. O-ring3. Connection for high pressure fuel hose
4. O-ring
5. Connection for fuel main pipe
6. Mounting bolt
7. Fuel filter (Refer to P.13-114.)
TSB Revision 03AO231

13418FUEL SYSTEM (SOHC-16 VALVE> - Specifications
SPECIFICATIONS
GENERAL SPECIFICATIONSMISCA-
Items
Fuel
Tank capacityReturn system
Filter
Fuel pump Type
Driven by
Throttle body Throttle bore
Throttle position sensor Idle air control motor
Closed throttle position switch
IAC valve position sensor
Engine control module Identification model No.
< Federal >

Sensors
Volume air flow sensorBarometric pressure sensor
Intake air temperature sensor
Engine coolant temperature sensor
Oxygen sensor
Vehicle speed sensor
Park/neutral position switch
Camshaft position sensor
Crankshaft position sensor EGR temperature sensor
Power steering pressure switch
Cvctuators
Multiport fuel injection relay type
Injector type and number
Injector identification mark
Evaporative emission purge solenoid
EGR solenoid %el
pressure regulator
Regulated pressure Specifications
60 (15.9)
Equipped
High pressure type
Electrical, in-tank type
Electric motor
mm (in.) 50 (1.969) Variable resistor typeDC motor type DC motor type by-pass air control system with
the Fast Idle Air Valve (FIAV)
Rotary contact type, within throttle position sensor
Hall element type
E2T36281 E2T36280
Karman vortex type
Semiconductor diffusion type
Thermistor type
Thermistor type Zirconia type
Reed switch type
Contact switch type Hall element type
Hall element type
Thermistor type
Contact switch type
Contact switch type
Electromagnetic, 4 MDH240
ON/OFF step solenoid valve Duty cycle type solenoid valve
kPa (psi) 335 (47.6)
1 TSB Revision

FUEL SYSTEM VALVE> - Troubleshootins
CHECK CHART CLASSIFIED BY PROBLEM SYMPTOMS
ProblemsymptomsStartingIdling stability Drivingr”
.-
%scn
E5
$4.a,o_
5;i
cz
iP.13-143
-
Ea,Ll2a
F.- s
G-
DE-
c-
Elc
-
-
>El
)El-
)I3-
)@I
I-

-
i
-
5‘32a,$%ba”
D&l DEI
i>El
-0%,a>+y -2.gPE.-50 z.E r2?p9 6=& g-

-
-Sheck items
‘ower
supply
%ginecontrol module power groundI
1 P.13-146
:uel pump
Jolume air flow sensor
B
f
E3
DELI @El
cP.13-162
P.13-165III P.13-167I
1/ P.l3-171 1
P.l3-172
P.l3-173
P.l3-175
P.13-176
P.l3-179
ntake air temperature sensor
BIB
DEI
0
DEl
3El
3
-I
iarometric
pressure sensor
ingine coolant temperature
sensor
‘hrottle position sensor
Iosed throttlepositionswitch
K valve oosition sensor
lamshaft position sensor
i-:rankshaft positionsensorIIlnition
switch-ST I
-I---0lnition switch-ST and park/neutralosition switch
chicle
speed sensor
ower steering pressure switch
ir conditioning switch and/C compressor clutch relayI/I- IIlxygen sensor
@El@ P.l3-181
@ElP.13-184
@[email protected]
Ile air control motor (DC motor)
inition coil and ignition powerOFI@piJOEIansistor
tiaporative emission purge solenoid01 P.13-189
1 Id
kl
c
tr
t
EGR solenoid @El@[email protected]
Fuel pressureOIlI @El8E.l @El @El @[email protected]
0 : Warm engine (number inside indicates check order)
0 : Cold engine (number inside indicates check order)
PROBLEM SYMPTOMS TABLE (FOR YOUR INFOMATION)
Refer to P.13-19.
TSB Revision

13-128FUEL SYSTEM - Troubleshooting
CIRCUIT DIAGRAM
< 1993 models>
IGNITIONSWITCH(ST)
I
SUB F'JILINK @
2
Licl
36
0
Ct\J.---------------~------------------.,\A-08C-08
I@34
m
2i
‘I
12
El3 A343
L6670lru
I
c;
BLE E-w
E
c!1
2
c:
3.____ --------------q-w-
1
___--_--q-w
?
+d
(N3
PARK/NEUTRALKlJ;;ON“1EbLYP&I
A-433’ .aAA-60
FUEL PUMP
k%%&TOR
-+
iI
kcJ
i
:
7:-MFIRELAY1
c-15
6
T
T
gl?3
;.
R.i
3
KY !x ry-8.Akc;c
s
-
1oa
-
J-Q
6
MFI CONTROL UNIT
t35-AC-HOW-WY
1 TSB Revision

FUEL SYSTEM - I?~FS~~ZFZLnt Procedures13-133
FUEL TANK AND FUEL LINEMIBEAAB
Symptom
Probable cause Remedy
Engine malfunctions
due to insufficient
fuel supply Bent or kinked fuel pipe or hose
Clogged fuel pipe or hose
Clogged fuel filter or in-tank fuel filter
Water in fuel filter Repair or replace
Clean or replace
Replace
Replace the fuel filter or clean the
fuel tank and fuel line
Dirty or rusted fuel tank interior
Clean or replace
Malfunctioning fuel pump
(Clogged filter in the pump)Replace
Evaporative emission
control system
malfunctions
[When fuel tank filler
tube cap is removed,
pressure releasingnoise is heard) Mispiping of vapor line
Disconnected vapor line piping joint
Folded, bent, cracked or clogged vapor line
Faulty fuel tank filler tube cap
Malfunctioning fuel tank pressure control valve Correct
Correct
Replace
Replace
Replace
SERVICE ADJUSTMENT
PROCEDURES
CURB IDLE SPEED INSPECTIONhll3MAE
(1) The vehicle should be prepared as follows before th
e
inspection.
lEngine coolant temperature: 85-95°C (185-203°F)
l Lights, electric cooling fan and accessories: OFF
l Transaxle: Neutral (P for vehicles with an automatic
transaxle)
(2) Connect a tachometer.
NOTE
Refer to
P.13-134 for information concerning connection Of
a tachometer.
(3) Set a timing light in position.
(4) Ground the terminal for adjustment of ignition timing.
(5) Start the engine and let it idle.
(6) Check whether or not the ignition timing is the standard
value; if not, adjust.
Standard value:
5”BTDC f 2”
(7) Stop grounding the terminal for adjustment of ignition timing.
(8) Let the engine idle for two minutes.
(9) Check the idling rpm.
Curb idle speed: 700
31100 rpm
NOTE
The idling rpm is automatically regulated by the idle aircontrol system.
(lO)lf not within the standard value range, refer to the CHECK
CHART CLASSIFIED BY PROBLEM SYMPTOMS and check
the
MFI component,
TS6 Revision1

FUEL SYSTEM - ?::;:r%t~pection Of MF’13439
ON-VEHICLE INSPECTION OF MFI COMPONENTS
COMPONENT LOCATION
6FUO843
Name Symbol NameSymbol
Air conditioning compressor clutch relay A
Ignition coil (ignition power transistor)
L
Air conditioning switchTIgnition timing adjustment terminalK
Camshaft position sensor and crankshaft posi- InjectorHMtion sensor- Multiport fuel injection relayU
Check engine/malfunction indicator lampS- Oxygen sensorN
Data link connectorQ- Park/Neutral position switch (A/T)6
EGR solenoid I- Power steering pressure switchP
EGR temperature sensor 0
Throttle position sensor (with closed throttle
position switch)
EEngine control modulev
Engine coolant temperature sensorFVehicle speed sensor (reed switch)R
Evaporative emission purge solenoidJVolume air flow sensor (with incorporated,in-
take air temperature sensor and barometncC
Fuel pump check terminalGpressure sensor)
Idle air control motor
D
NOTEThe “Name” column is arranged in alphabetical order. TSB Revision

FUEL SYSTEM (SOHC-16 VALVE> - :::;::tt?ction Of MF’13-147
FUEL PUMPM13YEAB
6FUO985-
@ Equipment srdeconnector
@ Harness sideconnectorI
Ignition switch (IG)
Multiport
fuel
@I Equipment sideconnector
TSB Revision
Fuel pump-I
@ Harness sideconnector
Engine COntrOl module A 8
7Fuom 6FU1951
OPERATION
a The fuel pump is driven when the engine i
s
cranking and while the engine is running.
lWhen the engine is cranking and while the engine
is running, the engine control module turns the
power transistor ON to supply power to the
multiport fuel injection relay coil. This causes
the
multiport fuel injection relay switch to turn
ON, and current is supplied from the ignition
switch via the multiport
fuel injection relay
switch to drive the fuel pump.
INSPECTION Using Scan Tool Refer to
P.13-46.