MITSUBISHI ECLIPSE 1990 Service Manual

SAFETY NOTICE
CAUTIONALL SERVICE AND REBUILDING INSTRUCTIONS CONTAINED HEREIN ARE
APPLICABLE TO, AND FOR THE CONVENIENCE OF, THE AUTOMOTIVE
TRADE ONLY. All test and repair procedures on components or assemblies in
non-automotive applications should be repaired in accordance with instructions
supplied by the manufacturer of the total product.
Proper service and repair is important to the safe, reliable, operation of all motor vehicles.
The service procedures recommended and described in this publication were developedfor professional
servlTe personnel and are effective methods for performing vehicle
repair.Following these procedures will help assure efficient economical vehicleperformance
and service reliability. Some of these service procedures require the use of
special tools designed for specific procedures. These special tools should be used when
recommended throughout this publication.
Special attention should be exercised when working with spring or tension loaded
fasteners and devices such as E-Clips, Circlips, Snap rings, etc., as careless removal
may cause personal injury. Always wear safety goggles whenever working on
vehicles or vehicle components.
7
It is important to note that this publication contains various Cautions and Warnings.These
should be carefully read in order to minimize the risk of personal injury, or thepossibility
that, improper service methods may damage the vehicle or render it unsafe.It
is important to note that these Cautions and Warnings cover only the situations and
procedures Chrysler Motors has encountered and recommended. Chrysler Motors couldnot possibly know,
evaluate, and advise the service trade of all conceivable ways thatservice
may *be performed, or of the possible hazards of each. Consequently, ChryslerMotors
has not undertaken any such broad service review. Accordingly, anyone who
uses a service procedure, or tool, that is not recommended in this publication, must assure
oneself thoroughly that neither personal safety, nor vehicle safety, be jeopardized bythe service
methods they select.
WE SrjPPORT
VOLUNTARY TECHNICIAN
CERTIFICATION
THROUGH

TALON
BACKUP
README.N or for additional information
PreViOUSlVmanufactured.a *-a- .I._..-1-L,.* _____ #Q ^_^__ l L.-Orintul in U.S.A.
GROUP INDEXROSA. - -
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .
Front Suspensio n................................
.
Brakes - Eir$rii. . . . . . . . . . . . . . . . . . . . . . . . . . ..s...
Clutch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling. . . . . . :. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . ..-..................
Engine....................................................
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Propeller Shaft and Universal. . . . . . . .
ml
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power steeringCD
ManualTransaxl e - Automatic....................
m
Bodym
Heaters and Air ConditioningRI
A
Emission Control Systems

._._ -_- 1 -.
MODEL INDICATIONS
The following abbreviations are used in this manual for classification of model types.\
M/T: Indicates the manual transaxle, or models equipped ‘with the manual t\
ransaxle.
A/T: Indicates the automatic transaxle, or models equipped with the automatic\
transaxle.
MPI: Indicates the multi-point injection, or engines equipped with the multi-\
point injection.
DOHC: Indicates an engine with the double overhead camshaft, or a model equipp\
ed with such an engine,
Turbo: Indicates an engine with turbocharger, or a model equipped with such an \
engine.
2WD: Indicates the front wheel-drive vehicles.
4WD: Indicates the 4 wheel-drive vehicles.
HOW TO READ A CIRCUIT DIAGRAM
initionkey positions “ACC” ” N” and8“ST” is shown combined.
~
Service Manual.
o&ficates that current flows
Input
1 Indicates power1supply connection.
A : Female connector9.1 Male connector
\ Il-4’
Input Output output
is..used as an intermediate connec-

GENERAL
---- -~- -------l
O-l
CONTENTS
GENERAL DATA AND SPECIFICATIONS . . . . . . . ..._..................._........_ 9
TECHNICAL FEATURES
4WD (Four-wheel Drive)........................................710
PJT Safety-lock Syste m........................................7
..__............................... 3
Theft-alarm System (Option for 4WD
Vehicles) . . . . . . . . . . . . . . . . . . . . . . . . . .._._........_..................... 8

o-2GENERAL - Technical Features
TECHNICAL FEATURESROOCAAB
EXTERIORLow and wide profile for appearance sports car
impression.
OOA0190 2
7OOA0189
I
1 No. tFeatures
1Flush surface and low front high rear styling for outstanding aerodynamic performance
2Pop up headlights of optical horn type
3Hood bulge indicating DOHC engine
4Futuristic glass upper body
5Removable tilt up sunroof (option for all models)If
6Smooth integrated body lines giving a lean appearance
7Wide tires and wide tread to emphasize power and stabilityI1
aBumpers made integral with the bodyi
9Wall to wall tail lamps for sporty imageIi
--

YGENERAL
- Technical Featureso-3
INTERIOR
/OOAO162\
No.Features
1Cock pit type instrument panel to give sporty image
2Switches arranged around the driver seat for easy access and operation
3Hi back seats with integral head rest for comfortable and firm holding
4
Integrally molded door trims with round and smooth transition to the instrument panel
,I5Sporty double seat with firm holding
i!6Rear quarter trims with built in dynamic speakers
!7Easy to use large capacity console boxI

o-4GENERAL - Technical Features
BASIC CONSTRUCTION
The 4WD vehicles are equipped with
2.OL DOHC
16-valve turbocharged engine and incorporate new
technologies such as full time 4WD of center
differential type with viscous coupling differential
limiting for excellent running stability and excellent
Steering
l Light weight and compact rack and pinion
type for high steering response
l Tilt steering mechanism to give optimum
driving position
\driving across bad roads, and $-wheel independent
suspension for comfortable riding.
Adopted on
2WD vehicles are 2.OL DOHC 16-valveengine, MacPherson strut type front suspension
and torsion axle
typ.e 3-link rear suspension.
Rear suspension
l Self-aligning double wishbone type suspen-
sion for comfortable ride
(4WD)l Torsion axle type 3 link suspension for
outstanding driving stability
(2WD)l Negative chamber for outstanding steer-
ability during high speed driving
0 Anti-lift geometry for high stability duringbraking
lIntegral torsional bar type axle beam for
optimum roll stiffness (2WD)
\Front propeller shaft (3-piece
4-joint type)
lRobro joint to absorb lengthwise and angular
change and prevent transmission of vibrations.
(4WD)
IFront suspension
The front suspension of McPherson strut type
independent suspension system
l Under steer geometry for outstanding steering
stability
l Negative offset geometry for outstanding
stabil-ity at braking
0 Offset coil springs for comfortable ride
Brakes
l Cross piping dual type proportioning valvethat keeps balanced braking power even at
failure of the hydraulic system.
l Four wheel disc brake system for high
braking power.

GENERAL - Technical Featureso-5ENGINE
The engines are the transverse-mounted engine
especially for front-engine/front-wheeldrive orfront-engine/4-wheel drive models, the
2.OL DOHC
16-valve engine with high-performance, silent-
operation,low-vibration,low-noise,low-fuel-
consumption features, an engine that fully displays
the most
up-todate engine technology.
SPECIFICATIONS
Engine model
Displacement
cc (cu.in.1
h$xo$put (SAE net)Max. torque (SAE net)
ft.Ibs./rpm
4G63Non-Turbo1997(122)135/6000125/5000
4663Turbo1997(122)195/6000203/3000
FEATURESHigh performance and low fuel consumption
l The rocker arm reduces the valve-actuation torque as well as fuel consumption.
l Air-intake efficiency improved through the adoption of the optimum air-intake system layout.
l Improved response and fuel consumption has been achieved by electronic control multipoint
fuel injection.
l Water-cooled turbocharger.
Quiet operation
l Noise and vibration have been decreased by the adoption of roller rocker arms.
l Noise generated by the valve mechanism has been decreased by the hydraulic auto lash adjusters.
l Vibrations have been decreased by the adoption of bearing caps with beams which increase the
rigidity of the crankshaft support points.
-Serviceability
l Complete self-diagnosis functions.
l Enhanced reliability through the adoption of gold-plated connector terminals.
l Use of an auto tensioner achieves maintenance-free, automatic adjustment of timing belt
tension.
l Use of the auto lash adjusters achieves maintenance-free, automatic adjustment of valve clearance
.o The 2coil ignition system without a distributor supplies sufficient ignition energy even during
high speed operation.

O-6GENERAL - Technical Features
Valve mechanisml The roller rocker arms de-crease losses.due to friction in
the valve system.
l The auto lash adjusters elimin-ate the need to adjust the valve
clearance.
ICombustion chamberThe combustion chamber is pro-
vided with a squish area for high
combustion efficiency.
tJ
Ignition systemThe 2coil ignition system without
a distributor supplies sufficient
ignition energy even in the high
speed operation.
76-4 Crankshaft pu!leyThe oullev orovrded with a torsion-
al
da’mper ieduces the transmis-
sion of vibrations.
EN0376
Auto tensionerThe auto tensioner eliminates the
need to adjust the timing belt
tension.
]Icrankshaft has five marn bearings