Market Position:
The 1997 Mitsubishi Eclipse, part of the second generation (1995-1999), was positioned as a sporty, affordable coupe and convertible that competed with vehicles like the Honda Civic del Sol, Toyota Celica, and Ford Mustang.
Competitive Analysis:
The Eclipse offered distinct styling and available turbocharged performance (GT and GS-T models) which differentiated it from some rivals. Its shared platform with the Plymouth Laser and Eagle Talon also provided a degree of brand diversity in the segment.
Key Features:
Available All-Wheel Drive (AWD) on certain performance models, optional turbocharged engines, distinct European-influenced styling, and a driver-focused interior.
Engine Mechanical:
Engine overhaul, timing belt replacement, piston and ring installation, cylinder head service, crankshaft and bearing service, valve train operation and adjustment.
Engine Management:
Fuel injection systems (MPI/GDI), ignition system diagnostics, emissions control systems (catalytic converter, EGR, EVAP), ECU operation and troubleshooting, sensor identification and testing (O2, TPS, MAP, MAF, Crank/Cam sensors).
Transmission Manual:
Clutch system inspection and replacement, gearbox overhaul, shift mechanism adjustments, gear ratio details.
Transmission Automatic:
ATF specifications and change intervals, torque converter service, valve body operation, hydraulic circuits, shift solenoid testing, transmission control module (TCM) diagnostics.
Drivetrain Axles:
Front and rear drive shafts, CV joints, differential service, wheel hub and bearing replacement.
Suspension Steering:
Front and rear suspension component inspection (struts, shocks, control arms, ball joints, bushings), alignment specifications, power steering system service, steering rack replacement.
Brakes:
Brake system diagnostics, pad and rotor replacement, caliper service, brake fluid specifications and bleeding procedures, ABS system operation and troubleshooting, parking brake adjustment.
Electrical Lighting:
Wiring diagrams, fuse box locations and identification, lighting system diagnostics (headlights, taillights, interior lights), bulb types and specifications.
Electrical Accessories:
Power windows, power locks, mirrors, sunroof, horn, wiper and washer system diagnostics.
HVAC:
Air conditioning system service (refrigerant types, charge capacities, leak detection), heater core replacement, blower motor diagnostics, climate control system troubleshooting.
Body Chassis:
Body panel removal and installation, door and trunk latch mechanisms, bumper systems, exterior trim replacement.
Maintenance:
Scheduled maintenance intervals, oil change procedures, filter replacement (oil, air, fuel, cabin), spark plug replacement, coolant flushes, drive belt inspection and replacement.
Diagnostics Troubleshooting:
Step-by-step diagnostic trees for common drivability issues, electrical faults, HVAC problems, and braking system malfunctions.
Repair Overhaul:
Detailed instructions for engine rebuilds, transmission overhauls, suspension component replacement, brake caliper rebuilding, and steering system repairs.
Component Replacement:
Specific guidance on replacing radiators, alternators, starters, fuel pumps, ignition coils, and other common wear items.
Bodywork Refinishing:
Information on panel alignment, rust repair considerations, and some basic paint and bodywork techniques.
Technical Depth:
Comprehensive, from basic preventative maintenance to complete engine and transmission rebuilds.
Engine Variants:
2.0L SOHC 4G63 MPI (Non-turbo), 2.0L DOHC 4G63 MPI (Non-turbo, GS model), 2.0L DOHC 4G63T Turbocharged MPI (GS-T model).
2.0L Sohc Non-Turbo Hp:
Approx. 132 hp @ 5500 rpm
2.0L DOHc Non-Turbo Hp:
Approx. 141 hp @ 6000 rpm
2.0L DOHc Turbocharged Hp:
Approx. 210 hp @ 6000 rpm
2.0L DOHc Turbocharged Torque:
Approx. 214 lb-ft @ 3000 rpm
Fuel System:
Multi-Point Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline (87 octane recommended for non-turbo, 91 octane recommended for turbo)
4G63 Sohc Mpi:
1997cc, 85mm bore, 88mm stroke, 9.5:1 compression ratio.
4G63 DOHc Mpi:
1997cc, 85mm bore, 88mm stroke, 9.5:1 compression ratio.
4G63T DOHc Mpi:
1997cc, 85mm bore, 88mm stroke, 8.5:1 compression ratio, turbocharger (TD05H-14B or similar).
Oil Change Interval:
Every 3,750 miles or 3 months (severe service) / 7,500 miles or 6 months (normal service).
Timing Belt Interval:
Recommended replacement every 60,000 - 90,000 miles, critical on turbocharged models due to interference engine design.
Spark Plug Replacement:
Every 30,000 miles for standard plugs, up to 60,000 miles for platinum or iridium plugs.
Engine Oil Spec:
API Service SG or SH, SAE 5W-30 or 10W-30 (refer to owner's manual for specific conditions).
Coolant Spec:
Ethylene glycol-based coolant, typically a 50/50 mix with distilled water. Mopar OAT/HOAT coolant may be compatible but check specific manual.
Transmission Fluid Manual:
API GL-3 or GL-4 gear oil, SAE 75W-90 or 80W-90.
Transmission Fluid Automatic:
Mitsubishi DiaQueen ATF SP-II or equivalent Dexron III/Mercon.
Brake Fluid Spec:
DOT 3 or DOT 4.
Power Steering Fluid Spec:
Dexron II/III ATF or specific power steering fluid.
Known Issues Engine:
Cracked exhaust manifolds on turbo models, oil leaks (valve cover gasket, oil pan gasket), radiator leaks, PCV valve issues causing rough idle.
Known Issues Transmission:
Clutch wear (especially on manual transmissions), automatic transmission solenoid issues, torque converter problems.
Known Issues Suspension:
Worn control arm bushings, blown struts/shocks, premature tie rod end wear.
Known Issues Electrical:
Faulty window regulators, failing power mirror motors, intermittent dashboard light issues, alternator failures.
Known Issues Body:
Rust issues (fender wells, rocker panels, rear quarters), seal degradation leading to water leaks, especially on convertibles.
Brand Heritage:
Mitsubishi has a long history in automotive manufacturing, with a strong presence in performance vehicles and rally racing, often associated with the legendary Lancer Evolution, though the Eclipse was a more mainstream sports coupe.
Model Evolution:
The second generation Eclipse (1995-1999) represented a significant styling and engineering update from the first generation. It adopted a more rounded, aerodynamic design and introduced more potent turbocharged and AWD options, solidifying its place in the affordable sports car market.
Production Location:
United States (Normal, Illinois) at the Diamond-Star Motors (DSM) plant, a joint venture with Chrysler.
Production Years:
1990-1994 (1st Gen), 1995-1999 (2nd Gen)