1991 MITSUBISHI 3000GT ESP

13-152FUEL SYSTEM- Fuel Line and Vapor Line
03FOO3
05FOO735 Nm7r; ft
Ihr-k” ._..I_.
@dFlare nut,xSERVICE POINTS OF REMOVAL
MlBKBAQ9. 13. REMOVAL OF EYE BOLT
Remove the eye bolt while holding the fuel filter nut
\securely.
Caution
Cover the hose connection with rags to prevent splash
of fuel that could be caused by some residual pressurein the fuel pipe line.
INSPECTION
MIBKCAJ
lCheck the hoses and pipes for cracks, bend, deformation
and clogging.
l Check the canister for clogging.
l Check the fuel filter for clogging and damage.
SERVICE POINTS OF INSTALLATION
MlSKDAU17.5. INSTALLATION OF FUEL VAPOR HOSE
/ 8. FUEL
RETURN HOSE
(1) If the fuel pipe has a stepped part, connect the fuel
hose to the pipe securely, up to the stepped part, as
shown in the illustration.
Iti(2) If the fuel pipe does not have a stepped part, connect
the fuel hose to the pipe securely, so that it is the
standard value.
Standard value: 25
- 30 mm (1.0 - 1.2 in.)
15. INSTALLATION OF HIGH PRESSURE FUEL HOSEApply engine oil to the hose union.
Insert the hose, being careful not to damage the O-ring, and
tighten securely.
CautionBecause 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.
12. INSTALLATION OF FUEL FILTER(1) When installing the fuel filter, first temporarily install the
filter to the filter bracket; then insert the main pipe at
the connector part of the high pressure fuel pipe, and
manually screw in the main pipe’s flare nut.
(2) Holding the fuel filter nut, tighten the fuel main pipe’s
flare nut and eye bolt at the specified torque. Then
tighten the filter to the bracket.
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‘d

CRUISE CONTROL SYSTEM - Troubleshootina13461
Trouble symptom
l The set vehicle speed variesgreatly upward or downward.l “Hunching” (repeated alter-
nating acceleration and
deceleration) occurs after
setting is made.
Probable cause
Check chart No.Remedy
Malfunction of the vehicleNo. 4Repair the vehicle speedspeed sensor circuit
sensor system, or replacethe part.Malfunction of thespeedometer cable orspeedometer drive gear
Vacuum pump assembly
No. 5Repair the actuatorcircuit poor contact
system, or replace thepart.Malfunction of thevacuum pump assembly
(including air leaks from
negative pressure
passage)
The cruise control system is notcanceled when the brake pedal
is depressed.Malfunction of the ECU
-Replace the ECU.
Brake switch (for cruiseNo. 6Repair the harness or
control) malfunction
replace the stop light
(short-circuit)switch.
Vacuum pump assemblyNo. 5Repair the harness ordrive circuit short-circuitreplace the vacuum pump
assembly.
The cruise control system is notcanceled when the clutch pedalis depressed. (It is canceled, however, whenthe brake pedal is depressed.)Malfunction of the ECU
-Replace the ECU.
Damaged or disconnected
If the input checkRepair the harness, orwiring of clutch switchcode No. 26 indicatesrepair or replace the clutch
input circuita malfunction.switch.No. 7Clutch switch improper
installation (won’t switch
ON)
Malfunction of the ECU-Replace the ECU.
The cruise control system is notDamaged or disconnectedIf the input checkRepair the harness, or
canceled when the shift lever iswiring of inhibitor switchcode No. 26 indicatesrepair or replace themoved to the “N” position.
input circuita malfunction.inhibitor switch.
(It is canceled, however, when
No. 8
the brake pedal is depressed.)Improper adjustment of
inhibitor switch
Cannot decelerate by using the
SET switch.Malfunction of the ECU
Temporary damaged ordisconnected wiring of
control switch input
circuit
-
No. 2Replace the ECU.
Repair the harness orreplace the control switch
Vacuum pump assemblyNo. 5Repair the harness orcircuit poor contactreplace the vacuum puml:assembly.
Malfunction of thevacuum pump assembly
Malfunction of the ECU
-Replace the ECU.
NOTEECU: Electronic control unit
1 TSB Revision

13-162CRUISE CONTROL SYSTEM - Troubleshooting
Trouble symptomProbable causeCheck chart No.
Remedy
Cannot accelerate or resume speedOpen or short circuit in
No. 2by using the RESUME switch.RESUME switch circuit inReplace the control switch
control switch
Vacuum pump assemblyNo. 5circuit poor contactRepair the harness or
replace the vacuum pump
Malfunction of thevacuum pump assembly
(including air leaks
from negative pressurepassage)assembly.
Malfunction of the ECU-Replace the ECU.
Even when CANCEL switch is set toON, cruise control is not canceled
Open or short circuit
in CANCEL switchIf the input check
Replace the control switch
(Cruise control, however, iscode No. 27 indicatescircuit in control switch
canceled when brake pedal isa malfunction.
depressed.)No. 2
Malfunction of the ECU-Replace the ECU
The cruise control system can be set
Malfunction of theNo. 4while traveling at a vehicle speedvehicle-speed sensorRepair the vehicle speed
of less than 40 km/h (25 mph), or
circuitsensor system, or replace
there is no automatic cancellationthe part.
at that speed.Malfunction of thespeedometer cable orthe speedometer drive
gear
Malfunction of the ECU
-Replace the ECU.
The cruise control indicator light
No. 3
of the combination meter does notDamaged or disconnectedbulb of indicator lightRepair the harness or
illuminate. (But cruise controlreplace the light bulb.
system is normal)Harness damaged or
disconnected
Malfunction of the ECU
-Replace the ECU.
Cruise control ON indicator light
No. 3
does not come on. (However, cruiseBurned-out indicator lightbulbRepair the harness or
control is functional.)replace the main switch.
Open or short circuit in
harness
Malfunction of control functionby
ON/OFF switching of ELC 4 AA
accelerator switch.
(Non-operation of damper clutch,
2nd gear hold, etc.)
Overdrive is not canceled during
fixed speed driving
No shift to overdrive during
manual driving.
Malfunction of circuitrelated to acceleratorswitch OFF function
Malfunction of the ECU
Malfunction of circuit
related to overdrive
cancellation, or mal-
function of ECU
No. IO
No. 11Repair the harness or
replace the part.
Repair the harness or
replace the part.
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CRUISE CONTROL SYSTEM - Troubleshooting13-163CHECK CHART
it l/Inspection of control unit power supply circuit
L;
,/
id
CRUISE#fi$ROL
0
SWITCH
“71
TROUBLESHOOTING HINTSECU terminal voltage
DESCRIPTION OF OPERATIONThe power is supplied through the ignition switch
(IG,) and cruise control main switch to the control
unit.
1. When the cruise control main switch is set to
ON with the ignition switch at ON, the current
from switch
S, flows through relay Ry, in the
switch. Accordingly, the contact of relay
Ry, is
closed and the power is supplied to the control
unit.
2. When the main switch is released, it automati-
cally returns to the neutral position. Since the
current from switch
S2 flows to relay Ry,, the
contact of relay Ry, remains closed.
3.When the main switch is set to OFF, current to
relay
Ry, is interrupted. This opens the contact
of relay
Ry, to stop the power supply to the
control unit. When the switch is released, it
automatically returns to the neutral position, but
relay Ry, stays in the OFF state.
4. When the ignition switch is set to OFF while
relay Ry, in the main switch is ON, relay
Ry, is
forced to the OFF state just like when the main
switch is set to OFF. Even if the ignition switch
is set to ON again, relay
Ry, stays in the OFF
state until the main switch is set to ON.
NOTEThe numbers beside each connector correspond
to those in the section
(P.13-176) “HARNESS
AND COMPONENTS LAYOUT”
TerminalNo.Signal nameCondition
I
TerminalvoltageI
2Control unit power supplyMain switch ON and neutral positionSystem voltage
thereafter
Main switch OFF and neutral positionov
thereafter8, 14
Control unit groundAt all timesov
16Control unit back up power supplyAt all timesSystem voltage
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14-2COOLING - SDecifications
SPECIFICATIONSGENERAL SPECIFICATIONSMMCA..
Items
Cooling method
Radiator
Type
Radiator fan motor
Type
Water pump
Type
Thermostat
Type
Identification markSpecifications
Water-cooled, pressurized, forced circulationwith electrical fan
Pressurized corrugated fin type
Direct current ferrite type
Centrifugal impeller type
Wax type with jiggle valve
76.5 (Stamped on flange)
dSERVICE SPECIFICATIONS
Items
Standard valueSpecifications
Range of coolant antifreeze concentration%30-60
Thermostat
Valve opening temperature of thermostat
“C (“F)
Full-opening temperature of thermostat“C (“F)
Opening pressure of cap high pressure valvekPa (psi)
Therm0 sensor (on radiator) operating temperature

OFF-t ON“C (“F)
ON -+ OFF“C (“F) condenser fan-Vehicles with air conditioner>
OFF-ON“C (“F)
ON + OFF“C (“F)
Limit
76.5 (170)
90
(I 94) or more
75-105(11-15)81-89
(178- 192)77(171)orless
91-99
(196-210.)
87 (189) or less
Opening pressure cap high pressure valve
kPa (psi)65 (9.2)LUBRICANT
MlQCD- -
ItemSpecified lubricantQuantity
Engine coolantlit. (qts.)High quality ethylene glycol8.0 (8.5).
antifreeze coolant
‘d
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INTAKE AND EXHAUST - Intake Manifold.15-1705LOO84
ProtrusionFRONT
ProtrusionA\
\ProtrusionProtrusidnOIL0857
FRONT
Intake mamfold7lN0090
APPLY~~ lubricant
INSPECTIONMlIMCATZCheck the following points; replace the part if a problem is
found.
INTAKE MANIFOLD(1) Check for damage or cracking of any part.
(2) Clogging of the negative pressure (vacuum) outlet port, or
clogging of the gas passages.
(3) Check deflection of installation surface with straight edge
and thickness gauge.
Standard value
: 0.15 mm (.0059 in.) or less
Limit
: 0.2 mm (.008 in.)
SERVICE POINTS OF INSTALLATIONMISMDAH
13. INSTALLATION OF INTAKE MANIFOLD GASKETInstall with gasket protrusions in the position illustrated.
10. INSTALLATION OF INTAKE MANIFOLD MOUNTING
NUT
Tighten the intake manifold mounting nuts one bank after
the other by the following ‘procedure.
(1) Tighten the nuts in the front bank to 3 to 5 Nm (2.2 to
3.6 ft.lbs.).
(2) Tighten the nuts in the rear bank to 12 to 15 Nm (9 to 11ft.lbs.).
(3) Tighten the nuts in the front bank to 12 to 15 Nm (9 to
11 ft.lbs.).
(4) Repeat steps (2) and (3) one more time respectively.
9. INSTALLATION OF INTAKE MANIFOLD MOUNTING
NUT
Apply lubricant sparingly to the intake manifold mounting
nuts.
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22-1
iv,MANUAL ~
TRANSAXLE
~
I
CONTENTSM22AA. -
MANUAL TRANSAXLE . . . . . . . . . . . .._...48INPUT SHAFT ASSEMBLY_..________.............: . . . . . . . . . . . . . . . . . . . . . . . . . .30
GENERAL INFORMATION....................................................48
SERVICE ADJUSTMENT PROCEDURES
............................51
Drive Shaft OilSealsReplacement....................................
52Speedometer Cable Replacement....................................
53Transfer Oil Seal Replacement............................................53Transmission Oil Level Inspection....................................51Transmission Oil Replacement............................................51
SHIFT LEVER ASSEMBLY....................................................
53
SPECIAL TOOLS........................................................................50
SPECIFICATIONS
....................................................................49
General Specifications........................................................49Lubricants............................................................................49
TRANSAXLE ASSEMBLY....................................................56,60
TRANSAXLE CONTROL*........................................................54
TRANSFER ASSEMBLY
........................................................59
MANUAL TRANSAXLE ....................2
CLUTCH HOUSING ASSEMBLY............................................46
DIFFERENTIAL ASSEMBLY
....................................................43
5TH SPEED SYNCHRONIZER ASSEMBLY
........................28
GENERAL INFORMATION
....................................................2INTERMEDIATE GEAR ASSEMBLY
....................................
OUTPUT SHAFT ASSEMBLY................................................
SERVICE ADJUSTMENT PROCEDURES............................
Drive Shaft Oil Seals Replacement....................................Speedometer CableReplacement....................................Transmission Oil Level Inspection....................................Transmisston Oil Replacement............................................
SHIFT LEVER ASSEMBLY....................................................
SHIFT RAILS AND FORKS....................................................
SPECIAL TOOLS........................................................................
SPECIFICATIONS....................................................................
General Specifications........................................................
Lubricants............................................................................
Sealants and Adhesives........................................................Service Specifications........................................................
Snap Ring (for Adjustment) and Spacer............................
SPEEDOMETER DRIVEN GEAR ASSEMBLY....................
TRANSAXLE ASSEMBLY _____...._........__....................................
TRANSAXLE CONTROL*. . ..________.___.._ ..__._.__.__...............
36
41
9
10
9
9
9
13
42
6
3z
63
3
45
14
11TROUBLESHOOTING
___.._______._____.......,..................................8
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
(1)A Supplemental Restraint System (SRS), which uses a driver-side air bag, has been installed in the 3000GT.(2)The SRS includes the following components: impact sensors, SRS diagnosis unit: SRS warning light, air bagmodule, clock spring, interconnecting wiring. Other SRS-related components (that may have to be
removed/installed in connection with SRS service or maintenance) are indicated in the table of contents byan asterisk (*).
WARNING!(1)Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to
personal injury or death to service personnel (from inadvertent firing of the air bag) or to the driver (fromrendering the
SRS inoperative).(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an
authorized MITSUBISHI dealer.(3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B
-Supplemental Restraint System (SRS), before beginning any service or maintenance of any component of theSRS or any SRS-related component.

22-30
MANUAL TRANSAXLE - Input Shaft Assembly
INPUT SHAFT ASSEMBLY
MZZMICA
DISASSEMBLY AND REASSEMBLY2150009
Disassembly steps
l * l a1. Taper roller bearingl * *a2. Bearing sleeveI)+3.Snap ringl * l a4. Taper roller bearingl 45.Snap ring**6.Conespringl *7.Subgear
8. 4th speed gear
9.Needlebearingl * 10. Bearing sleeveII. Synchronizer ring
l * 12. 3rd-4th speed synchronizer assembly** 13. Synchronizer spring
14. Synchronizer sleeve
15. Synchronizer key
16.Synchronizer hub
17. Synchronizer ring
18.
3rd speed gear
19.Needle bearing20.Input shaft
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