Market Position:
The Alfa Romeo 155 was positioned as a compact executive sedan, competing in a segment dominated by German rivals, offering a blend of performance, distinctive Italian styling, and a driver-focused experience.
Competitive Analysis:
Competed with vehicles such as the BMW 3 Series (E36), Mercedes-Benz C-Class (W202), Audi A4 (B5), and Saab 900 NG.
Key Features:
Distinctive styling, advanced chassis dynamics, powerful engine options (including Twin Spark and V6 Busso), comfortable and well-appointed interior, available all-wheel drive (Q4 models).
Systems Covered:
Engine, Driveline, Suspension, Brakes, Steering, Electrical, Climate Control, Body, Interior, Fuel System, Ignition System, Emission Control, Transmission, Clutch, Exhaust System, Starting System, Battery & Charging, Information & Entertainment, Lighting, Safety Belt System
Driveline System:
Includes front-wheel drive components, differential, and for Q4 models, the viscous coupling all-wheel drive system, transfer case, and driveshafts.
Brake System:
Detailed coverage of hydraulic components (master cylinder, calipers, wheel cylinders), friction materials (pads, shoes), parking brake, ABS system components and troubleshooting.
Steering System:
Mechanical steering rack and pinion, power steering system hydraulics, pump, fluid, and linkage components.
Engine Ignition:
Covers spark plugs, ignition coils (for Twin Spark), distributor (if applicable to specific market/variant), ignition timing, and related electronic control components.
Electronic Engine Controls:
Detailed diagnostics and troubleshooting for the Engine Control Unit (ECU), sensors (e.g., Crankshaft Position, Camshaft Position, Throttle Position, MAP), actuators, and wiring harnesses.
Climate Control System:
Manual and automatic climate control systems, HVAC unit components (blower motor, heater core, evaporator), refrigerant system, air distribution, control modules, and troubleshooting.
Body System:
Covers interior and exterior trim, body panels, door mechanisms, glass, frames, mirrors, seating, instrument panel, console, wipers, washers, roof, bumpers, and body repairs including metalwork.
Procedures Included:
Routine Maintenance, Troubleshooting, Diagnostics, Component Removal & Installation, Component Overhaul, Body Repairs, Metal Repairs, Wiring Diagrams, Specifications and Data
Noise Vibration Harshness Troubleshooting:
Diagnostic procedures for identifying and rectifying NVH issues, including engine mounts, suspension components, exhaust system, and body isolation.
Jacking And Lifting Points:
Correct procedures and designated points for safely lifting the vehicle with jacks and placing it on stands for maintenance and repair.
Technical Depth:
Dealer Level Factory Manual Standard - Comprehensive from basic maintenance to major overhauls and diagnostics.
Diagnostic Troubleshooting:
Detailed diagnostic flowcharts and symptom-based troubleshooting guides for all major vehicle systems.
Torque Specifications:
Essential torque values for critical fasteners across all mechanical and chassis systems.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all vehicle systems, crucial for electrical troubleshooting and repair.
Primary Engine Variants:
Twin Spark (1.8L, 2.0L), 2.5L V6 (164 derived Busso V6)
2.0L Twin Spark Horsepower:
Approximately 150-155 PS (1996 Model Year)
2.5L V6 Busso Horsepower:
Approximately 188-192 PS (1996 Model Year)
Fuel System:
Multi-point Fuel Injection (MPI)
Engine Management System:
Bosch Motronic (Specific variant dependent on engine and market)
Emission Control Systems:
Catalytic Converter, Lambda Sensor (Oxygen Sensor)
Engine Cooling System:
Water-Cooled, Thermostatic Control
Oil Change Interval:
Typically 10,000-15,000 km or 12 months (Consult Manual for Specific Engine Type)
Timing Belt Replacement Interval:
Approximately 60,000-80,000 km or 4-5 years for Twin Spark engines (Crucial Maintenance Item, Interference Engine)
Engine Oil Specification:
API SG/SH/SJ, ACEA A2/A3, SAE 10W-40 or 15W-50 (Varies by temperature and engine type, consult manual for precise recommendation).
Coolant Specification:
Ethylene Glycol based antifreeze with corrosion inhibitors. Typically a 50/50 mix with deionized water.
Brake Fluid Specification:
DOT 3 or DOT 4
Common Issues:
Rust (especially wheel arches, sills), timing belt failure on Twin Spark engines if not replaced on schedule, wear in suspension bushings, electrical gremlins, aging rubber hoses and seals.
Timing Belt Kit Example Part Number:
Example: Gates TCK157 (for 2.0 TS) - Exact part numbers vary, manual will be definitive.
Spark Plug Type:
Twin Spark engines use two spark plugs per cylinder. Example: NGK BCPR6ET-10 / Champion RC7BYC4. Manual provides exact specifications.
Idle Speed Setting:
Specific RPM values for hot idle, adjustable via ECU or manual adjustment depending on engine management.
