Market Segment:
Performance Compact Sedan / Rally Homologation Special
Competitors:
Subaru Impreza WRX STI, Ford Escort RS Cosworth, Lancia Delta Integrale.
Performance Focus:
Engineered for rally racing, emphasizing power, handling, and all-wheel-drive traction.
Technology:
Introduction of Active Yaw Control (AYC) for enhanced cornering stability.
Design:
Aggressive styling, large rear spoiler, functional aerodynamic aids.
Engine:
Detailed diagnostic, repair, and overhaul procedures for the 4G63 engine, including turbocharger, cooling, lubrication, and fuel systems.
Transmission:
Service and repair information for the F5M33 5-speed manual transmission, including clutch, gearbox, and drivetrain components.
Drivetrain:
Covers front and rear differentials, driveshafts, transfer cases, and the Active Yaw Control (AYC) system.
Suspension:
Front MacPherson strut and multi-link rear suspension, including alignment specifications, shock absorbers, springs, and bushings.
Brakes:
Front and rear disc brakes, including ABS system, brake fluid specifications, caliper overhaul, and pad replacement procedures.
Steering:
Power steering system diagnosis and repair, including pump, rack, and fluid specifications.
Electrical:
Wiring diagrams, ECU pinouts, starter, alternator, ignition system, lighting, and accessory circuits.
Body And Chassis:
Body panel removal/installation, interior trim, glass replacement, structural components, and chassis repair.
Heating And Air Conditioning:
AC system diagnosis, refrigerant types, component replacement, and heater core service.
Safety Systems:
Airbag system (SRS) diagnosis and repair, seatbelt mechanisms.
Maintenance:
Scheduled maintenance tasks, oil changes, filter replacements, spark plug replacement, belt inspections.
Diagnostics:
Troubleshooting charts for common problems, fault code interpretation, component testing procedures.
Repair:
Step-by-step instructions for component removal, installation, and overhaul across all major vehicle systems.
Specifications:
Torque specifications, clearances, fluid capacities, electrical resistance values, engine timing settings.
Alignment:
Detailed suspension alignment parameters (camber, caster, toe) for optimal handling.
Rebuilds:
Comprehensive instructions for engine, transmission, and differential rebuilds.
Depth:
Factory-level technical depth covering everything from basic maintenance to complete engine and transmission overhauls, including advanced diagnostics.
Engine Type:
2.0L Inline 4-cylinder DOHC 16-valve turbocharged
Engine Code:
4G63 (Revised for Evo IV)
Horsepower Ps:
280 PS (276 hp) - Officially rated due to the 'gentleman's agreement' among Japanese manufacturers.
Torque Nm:
352 Nm (260 lb-ft)
Bore X Stroke:
85.0 mm x 88.0 mm
Fuel Delivery:
Electronic Fuel Injection (EFI) with Multi-Point Injection
Fuel Type:
Unleaded Premium Gasoline (95 RON or higher recommended)
ECU:
Engine Control Unit (ECU) with ignition timing and fuel mapping adjustments.
Cooling Type:
Water-cooled, pressurized system
Oil Capacity Liters:
4.5 liters (with filter change)
Oil Type Recommendation:
API SG or SH, SAE 10W-30 or 10W-40 (Synthetic recommended for high-performance use)
Type:
5-speed Manual Transmission (F5M33)
Type:
None (All Evo IV models featured a manual transmission)
Drivetrain:
All-Wheel Drive (AWD) with Active Yaw Control (AYC)
Fluid Type Recommendation:
API GL-3 or GL-4, SAE 75W-90 (Manual Transmission Fluid)
Capacity Liters:
2.7 liters (Manual Transmission)
NHTSA Crash Test Ratings:
Not officially tested by NHTSA in the US market during its production years as it was primarily a Japanese Domestic Market (JDM) vehicle.
Traction Control:
Yes (AYC - Active Yaw Control)
Anti Lock Brakes:
Yes (ABS)
Electronic Brakeforce Distribution:
Integrated with ABS system.
Airbags:
Driver and Passenger Airbags (standard on most trims)
Seatbelts:
Three-point inertia-reel seatbelts with pretensioners
Crumple Zones:
Designed with front and rear crumple zones for energy absorption.
Audio System:
Factory AM/FM stereo with CD player (often optional) and cassette tape player. Speaker configuration typically 4-6 speakers.
Display:
Basic digital climate control display and analog gauge cluster.
Active Yaw Control:
The signature technological feature, actively distributing torque between the rear wheels to enhance cornering performance and stability.
Anti Lock Braking System:
Standard ABS system to prevent wheel lock-up during heavy braking.
Bluetooth:
Not available from the factory.
Usb Ports:
Not available from the factory.
Oil Change Km Miles:
Every 5,000-7,500 km (3,000-4,500 miles) or 6 months, whichever comes first (severe duty).
Air Filter Replacement Km Miles:
Every 15,000-20,000 km (9,000-12,000 miles).
Spark Plug Replacement Km Miles:
Every 40,000-60,000 km (24,000-36,000 miles), depending on spark plug type (iridium recommended).
Timing Belt Replacement Km Miles:
Every 90,000-100,000 km (56,000-62,000 miles) or 5 years.
Coolant Type:
Ethylene Glycol based, 50/50 mix with distilled water (typically green coolant).
Brake Fluid Type:
DOT 3 or DOT 4
Power Steering Fluid Type:
Dexron II or equivalent ATF
Engine Reliability:
Known for robust 4G63 engine, but requires diligent maintenance. Common issues include turbocharger wear, head gasket failures under extreme stress, and oil starvation if not properly maintained.
Ayc System:
The AYC hydraulic pump and solenoids can be prone to failure over time due to age and heat cycles. Fluid leaks can also occur.
Rust:
As with many Japanese performance cars of this era, rust can be a concern, particularly in the wheel arches, sills, and undercarriage, depending on climate and previous care.
Suspension Wear:
Bushings and ball joints can wear out, affecting handling and alignment. Shock absorbers may also lose damping effectiveness.
Motorsport Legacy:
Mitsubishi has a long and successful history in rally racing, starting with the Pajero and then transitioning to the Lancer platform for WRC homologation.
Generation:
Fourth generation of the Lancer Evolution, succeeding the Evo III.
Key Advancements Over Evo Iii:
Introduction of AYC, revised chassis with increased rigidity, improved aerodynamics, and enlarged intercooler.
Manufacturing Location:
Japan
Production Volume:
Significant production numbers, but exact figures for Evo IV are not widely publicized; tens of thousands are estimated.
Market Availability:
Primarily Japan Domestic Market (JDM), with limited imports to other countries.
