1991 MITSUBISHI 3000GT fuel

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
dir J
bag module, clock spring, interconnecting wiring. Other SRS-related comp\
onents (that may have to be
(*).
The Supplemental Restraint System (SRSI-related components are shown in the following MASTER TABLE
OF CONTENTS. Be sure to carefully read and understand the WARNING below \
before proceeding.
Group number
22.23
32
36
42
52A
Group nameSRS-related components
FUELCRUISE CONTROL SYSTEM/ P.13-185
MANUALTRANSAXLE.TRANSAXLE CONTROLAUTOMATIC TRANSAXLE
POWER PLANT MOUNTRIGHT MEMBER, LEFT MEMBER AND CROSSMEMBERP.32-6
ELECTRONIC CONTROLSUSPENSION’STEERING ANGULAR VELOCITY SENSORP.33B-19
PARKING BRAKESPARKING BRAKE LEVER AND PARKiNG BRAKE CABLE/ P.36~5I
STEERING/POWER STEERING GEAR BOX/ P.37A-17
/STEERING WHEEL AND SHAFTj P.37A-13
BODY
INTERIOR
FENDER
FLOOR CONSOLE/ P.52A-11
FRONT SEAT
INSTRUMENT PANEL
P52A-18
P.52A-8
CHASSIS ELECTRICAL
SEAT BELT
COLUMN SWITCH
HORN SWITCH
IGNITION SWITCH
P.52A-25
P.54-73
P.54-78
1 P.54-6
RADIO REMOTE-CONTROL/ P.54.110
HEATER, AIR CONDITIONERAIR-CONDITIONER CONTROL PANELAND VENTILATIONAIR-CONDITIONER CONTROL UNITP.55-56
/DAMPER CONTROL MOTOR ASSEMBLYI
/HEATER CONTROL ASSEMBLY1 P.55-18I
HEATER UNIT.1 P.55-22
WARNING!
VENTILATORS (INSTRUMENT PANEL)P.55-36
(1) Improper service or maintenance of any component of the SRS, or an\
y SRSrelated component,
can lead to personal injury or death to service personnel (from inadver\
tent firing of the air bag) or
to the driver (from rendering the SRS inoperative).
(260°F) in baking or in
drying after painting, remove the SRS components (air bag module, SRS d\
iagnosis unit, front
perfarmed
only at an authorized MITSUBISHI dealer.
52B
- Supplemental Restraint System (SRS), before beginning any service or m\
aintenance of any
component of the SRS or any SRS-related component.
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b
00-I
GENERALCONTENTS
MOOOA- .
GENERAL DATA AND SPECIFICATIONS . . . . . .21
HOW TO USE THIS MANUAL. . . . . . . . . . . . . . . . . . . . . . . . . . . .3Definition of Terms
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Explanation of Circuit Diagrams
. . . . . .._...........7Explanation of Manual Contents
. . . . . . . . . . . . . . . . . . . .4
Explanation of the Troubleshooting Guide . .
6ModelIndications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Scope of Maintenance, Repair and
ServicingExplanations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Troubleshooting
. . . . . . .._.......................................3
LUBRICATION AND MAINTENANCE. . . . . .._....31SCHEDULED MAINTENANCE TABLE. . . . . . .._.
MAIN SEALANT AND ADHESIVE TABLE. . .44
MAINTENANCE SERVICE
. . . . . . . . . . . . . . . .._......_.....__Air Cleaner Element
. . . . . . .._......._......_................Automatic Transaxle
. . . . . . . . . . . . . . . . . . . . . . . . .._......._.....Ball Joint and Steering Linkage Seals
. . . . . . . . . . . .
BrakeHoses. . . . . . . . . . . . . . . . . . . . . . . . . . . .._......._.._...._......._..
Disc Brake Pads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drive Belt (For Alternator)
. . . . . . . . .._.........._..........Drive Shaft Boots
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Engine Coolant
. . . . . . . . . . . . ..__.._.............................Engine Oil
.._....__._.................................................Engine Oil Filter
. . . . .._._.......__.................. . . . . . . . . . . .Exhaust System
_....._......._.....__._............,...........Fuel Hoses
..__......__............................................36
3740
42
42
42
38
43
41
38
39
43
36
FuelSystem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Manual Transaxle
. . . . . . . . . .._........................_.......Rear Axle
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._..._.._..____.._.......
SparkPlugs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._...............TimingBelt
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MASTER TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . .
PRECAUTIONS BEFORE SERVICE. . . . . . . . . . . . . . . .
RECOMMENDED LUBRICANTS AND
LUBRICANT CAPACITIES TABLE. . . . . . .._........
SPECIAL HANDLING INSTRUCTIONS
FOR AWD MODELS. . . . . . . . . . . . .._...._........................
TIGHTENING TORQUE. . . . . . . . . . . . . . . ..__.....................
TOWING AND HOISTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VEHICLE IDENTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . .._.....Chassis Number .
.._............................................Engine Model Stamping
.._..........................._...._Theft Protection
. . . . .._.........................................Vehicle Identification Code Chart Plate
.._.....Vehicle Identification Number List
.._._....._..._.Vehicle Identification Number Location
. . . .._
Vehicle Information Code Plate . . . . .._._......_.......Vehicle Safety Certification Label
. . . ..I . . . . .._..._...
36
3943
37
3724
1532
35
20
23
16
8
10
11
11
8
9
8
10
10

00-18
GENERAL - Towing and Hoisting
Frame contact support location:
1,070 mm (42.0 in.): 1,130 mm (44.0 in.) OOFOO3'
Front OOFO046HOISTING
POST TYPESpecial care should be taken when raising the vehicle on a
\frame contact type hoist. The hoist must be equipped with theL)proper adapters in order to support the vehicle at the proper
locations.
Caution
When service procedures require removing rear suspen-sion, fuel tank, spare tire and liftgate, place additional
weight on rear end of vehicle or anchor vehicle to hoist toprevent tipping of center of gravity changes.
FLOOR JACKThe usual type of floor jack is used at the following locations.
Front: Under the mid point of No. 1 crossmember
NOTEOn vehicles with active-aero system, the front jacking point
can be accessed by removing the center cover panel from
the under cover. Be sure to reinstall the center cover panel
after jack-up operation.
Rear:
Under the jack up bracket of crossmember
Under the rear differential
Caution1. When lifting the No. 1 crossmember, do not allow jack
lifting plate to contact under cover.
2. In order to prevent scarring the crossmember, place a
piece of cloth on the jack’s contact surface (to prevent‘corrosion caused by damage to the coating).
d3. A floor jack must never be used on any part of the
underbody.
4.Do not attempt to raise one entire side of the vehicle by
placing a jack midway between front and rear wheels.This practice may result in permanent damage to the
body.
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00-22GENERAL - General Data and Specifications
Transaxle
Model No. -Type
Manual transaxle
Automatic transaxle
Fuel system
Fuel supply system3000GT
(Non-Turbo)
F5M33 -5speed manual
F4A33 - 4-speedautomatic
Electronic
control
multi-pointinjection
3000GT SL
(Non-Turbo)
F5M33 -5-speed manual
F4A33 - 4-speedautomatic
Electronic
control
multi-point
injection
3000GT VR-4
(Turbo)W5MGl
-5-speed manual
-
Electronic
control
multi-pointinjectionENGINE SPECIFICATIONS
Items
Type
Number of cylinders
Boremm (in.)
Strokemm (in.)
Piston displacementcm3 (cu.in.)
Compression ratio
Firing orderTRANSAXLE SPECIFICATIONS
FL
Items
Type
Gear ratio
Final reduction ratio1st
2n’d
3rd
4th
5th
Reverse
Transaxle
Transfer
L
6672 Non-Turbo
V60” DOHCFront Transverse
6
91 .I (3.59)
76.0 (2.99)
2,972 (181.4)
10
1-2-3-4-5-6
6672 Turbo
V60” DOHC
Front Transverse
6
91 .I (3.59)
76.0 (2.99)
2,972 (181.4)
8.0
1-2-3-4-5-6
F5M33W5MGlF4A33
5-speed M/T
3.090
1.833
1.217
0.888
0.741
3.166
4.153
-
5-speed MIT
3.071
1.739
1.103
0.823
0.659
3.076
3.972
0.814i
4-speed AlT
2.551
1.488
1 .ooo
0.685
-
2.176
3.958
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00-24GENERAL - Master Troubleshooting
MASTER TROUBLESHOOTING
MOOWWENGINE OVERHEATS
Symptom
Engine overheatsProbable cause
Cooling system
faulty
, incorrect ignition timing
Reference page
14-3
11-13
v’.ENGINE WILL NOT CRANK OR CRANKS SLOWLY
Symptom
Engine will not crankor cranks slowly
Probable cause
Starting system faulty
Reference page
16-15ENGINE WILL NOT START OR HARD TO START (CRANKS OK)
1 Symptom
Engine will not start or hard to
start (Cranks OK)Probable causeNo fuel supply to injector
injection system problems
Ignition system problems
Vacuum leaksl Purge control valve hosel Vacuum hosesl Intake manifoldl Air intake plenuml Throttle bodyl EGR valve
Reference page
-
-
16-25
17-3
Compression too low
11-15
d
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GENERAL - Master Troubleshooting
ROUGH IDLE OR ENGINE STALLS
LProbable causeReference page or remedy
Symptom
Rough idle or engine stallsVacuum leaks
l Purge control valve hosel Vacuum hosesl Intake manifoldl Air intake plenuml Throttle bodyl EGR valve
Ignition system problems16-25
Idle speed set too lowCheck idle speed controlsystem
Idle mixture too lean or too rich-
Fuel injection system problems-
Exhaust gas recirculation (EGR) systemproblems17-11
Engine overheats
114-3
Compression too lowIll-15
ENGINE HESITATES OR POOR ACCELERATION
L
Reference pageSymptomProbable cause
Ignition system problem
Vacuum leaksl Purge control valve hosel Vacuum hosesl Intake manifoldl Air intake plenuml Throttle bodyl EGR valve
Air cleaner clogged
Fuel line clogged
Fuel injection system problem
Emission control system problem
l EGR system always on
Engine overheats
Compression too low11-13
Engine hesitates or poor
acceleration
17-3
15-9
-
17-11
14-3
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00-26GENERAL - Master Troubleshooting
ENGINE DIESELING
Symptom
Engine dieseling (runs afterignition switch is turned off)
Probable cause
Incorrect ignition timing
Reference page
11-13EXCESSIVE OIL CONSUMPTION
ISymptomProbable cause( Reference page or remedy(
Excessive oil consumptionOil leakRepair as necessary
Positive crankcase ventilation line clogged
Valve stem seal worn or damaged
17-5
11-34
I----Valve stem worn11-34I
IPiston ring worn or damaged11-44IPOOR FUEL MILEAGE
NOISE
SymptomProbable causeReference page or remedy
NoiseLoose bolts and nutsRetighten as necessary
Engine noise
il-10
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GENERAL - Lubrication and Maintenance00-31LUBRICATION AND MAINTE-
NANCEMOOPA- -
iiMaintenance and lubrication service recommenda-
tions have been compiled to provide maximum
protection for the vehicle owner’s investment
against all reasonable types of driving conditions.
Since these conditions vary with the individual
vehicle owner’s driving habits, the area in which the
vehicle is operated and the type of driving to which
the vehicle is subjected, it is necessary to prescribe
lubrication and maintenance service on a time
frequency as well as mileage interval basis.
Oils, lubricants and greases are classified and
graded according to standards recommended by the
Society of Automotive Engineers
(SAE), the Amer-
ican Petroleum Institute (API) and the National
Lubricating Grease Institute
(NLGI).MAINTENANCE SCHEDULES
Information for service maintenance is provided
under “SCHEDULED MAINTENANCE TABLE”.
Three schedules are provided; one for “Required
Maintenance”, one for “General Maintenance” and
one for “Severe Usage Service”.
Item numbers in the “SCHEDULED MAINTE-
NANCE TABLE” correspond to the item numbers in
the “MAINTENANCE SERVICE” section.
LSEVERE SERVICE
Vehicles operating under severe service conditions
will require more frequent service.
Component service information is included in
appropriate units for vehicles operating under one or
more of the following conditions:
1. Police, taxi, or commercial type operation
2. Operation of Vehicle
(1) Short-trip operation at freezing temperature
(engine not thoroughly warmed up)
(2) More than 50% operation in heavy city
traffic during hot weather above 32°C
(90°F)(3) Extensive idling
(4) Driving in sandy areas
(5) Driving in salty areas
(6) Driving in dusty conditions
ENGINE OIL
The SAE grade number indicates the viscosity of
engine oils, for example, SAE 30, which is a single
grade oil. Engine oils are also identified by a dual
number, for example, SAE 1 OW-30, which indicates
a multigrade oil.
The API classification system defines oil perform-
ance in terms of engine usage. Only engine oil
idesigned “For Service SG” or “For Service
SGXD”,when available, should be used. These oils contain
sufficient chemical additives to provide maximumengine protection. Both the SAE grade and the API
designation can be found on the container.
Caution
Test results submitted to EPA have shown thatlaboratory animals develop skin cancer after
prolonged contact with used engine oil. Accor-dingly, the potential exists for humans to de-
velop a number of skin disorders, including
cancer, from such exposure to used engine oil.
Care should be taken, therefore, when changing
engine oil, to minimize the amount and length ofexposure time to used engine oil on your skin.
Protective clothing and gloves, that cannot be
penetrated by oil, should be worn. The skin
should be thoroughly washed with soap and
water, or use waterless hand cleaner, to removeany used engine oil. Do not use gasoline,
thinners, or solvents.GEAR
LUEiRlCANTSThe SAE grade number also indicates the viscosity
of Multi-Purpose Gear Lubricants.
The API classification system defines gear lubri-
cants in terms of usage. Typically gear lubricants
conforming to API GL-4 or GL-5 with a viscosity of
SAE
75W-85W are recommended for manual trans-
axle.
LUBRICANTS
- GREASES
Semi-solid lubricants, bear the
NLGI designation and
are further classified as grades 0, 1, 2, 3 etc.
Whenever “Chassis Lubricant” is specified,
Multi-Purpose Grease,
NLGI grade 2, should be used.
FUEL USAGE STATEMENT
Use premium unleaded gasoline having a minimum
octane rating of 91,
(R + M)/2. However, it is also
possible to use unleaded gasoline with an octane
rating of at least 87.
Unleaded gasolines only must be used in vehicles
equipped with catalyst emission control systems.
All vehicles, so equipped, have labels located on the
instrument panel and on the back of fuel filler lid that
state, “UNLEADED GASOLINE ONLY”. These vehi-
cles also have fuel filler tubes especially designed to
accept the smaller diameter unleaded gasoline
dispensing nozzles only.
MATERIALS ADDED TO FUEL
Indiscriminate use of fuel system cleaning agents
should be avoided. Many of these materials in-
tended for gum and varnish removal may contain
highly active solvents or similar ingredients that can
be harmful to gasket and diaphragm materials used
in fuel system component parts.
1 TSB Revision