🏷️ Basic Information

Make:

Alfa Romeo

Model:

155

👋 Introduction

Market Position:

The Alfa Romeo 155 was positioned as a compact executive car, aiming to blend sporty driving dynamics with Italian flair and practical usability, competing in a segment dominated by German marques like BMW and Mercedes-Benz, as well as other Italian offerings.

Key Competitors:

BMW 3 Series (E36), Mercedes-Benz C-Class (W202), Audi 80/A4 (B4/B5), Lancia Dedra, Fiat Croma.

Key Features:

Distinctive Alfa Romeo styling, engaging handling characteristics, powerful engine options (especially Busso V6), advanced suspension geometry for its era, and a luxurious yet driver-focused interior.

Ideal User:

Suitable for professional mechanics, DIY enthusiasts, and owners looking to perform maintenance, repairs, or restoration on their Alfa Romeo 155.

Italian Engineering:

The 155 embodies the classic Italian approach to automotive design and engineering, prioritizing driving engagement, aesthetics, and a distinctive character over pure clinical efficiency.

📋 Manual Details

Page Count:

Over 1,000

Manual Type:

Workshop Service Repair Manual

Format:

PDF Download

Language:

English (Implied by product description and target market)

Download Access:

Instant download provided immediately after payment via PayPal or credit card, with a link also sent via email. A 3-day download window is specified.

Operating System Compatibility:

Compatible with all operating systems including Windows (97, 2000, Me, XP, Vista, 7, 10), Linux, and Mac.

📖 Manual Coverage

Systems Covered:

Engine Mechanical, Engine Electrical, Fuel System, Ignition System, Cooling System, Exhaust System, Transmission (Manual & Automatic), Drivetrain (Front Wheel Drive), Brakes (ABS, Hydraulic), Suspension, Steering, Bodywork & Exterior, Interior, HVAC, Electrical Systems (Lighting, Accessories, Wiring Diagrams), Electronic Diagnosis, Troubleshooting

Procedures Included:

Routine Maintenance, Scheduled Service, Troubleshooting Faults, Component Removal & Installation, Repair Procedures, Rebuilding Procedures, Diagnostic Procedures, Electrical System Repairs, Body Repair, Suspension & Steering Alignment, Brake Service & Repair, Engine Tuning

Technical Depth:

Comprehensive diagnostic and repair information suitable for professional technicians and advanced DIY enthusiasts. Covers detailed component breakdowns, specifications, and step-by-step procedures for most mechanical and electrical systems.

Brakes System:

Detailed coverage of hydraulic systems, brake pad and disc replacement, caliper service, ABS system troubleshooting and component testing (if equipped).

Electrical System:

Comprehensive wiring diagrams, fuse box layouts, component testing procedures for lighting, ignition, starting, charging, instrument cluster, power windows, central locking, and ECU diagnostics.

Cooling System:

Detailed instructions for radiator and fan service, water pump replacement, thermostat testing and replacement, coolant flushes, and leak detection.

Engine Rebuild:

Detailed procedures for engine disassembly, inspection, cleaning, and reassembly, including piston ring replacement, bearing services, cylinder head overhauls, valve seat grinding, and camshaft timing adjustments.

Suspension Steering:

Instructions for replacing suspension components such as shock absorbers, coil springs, control arms, ball joints, tie rod ends, and steering rack overhaul. Includes alignment specifications.

Diagnostic Troubleshooting:

Systematic approaches to diagnosing electrical and mechanical faults, including symptom identification, component testing, use of diagnostic tools, and interpretation of fault codes (if OBD systems were present on later models).

📊 Manual Specifications

File Format:

PDF (potentially zipped/RAR for large files)

File Size Potential:

Can be very large, up to 4000 MB, necessitating sufficient storage space and a stable internet connection for download.

Print Quality:

Printable at high resolution, allowing for clear reproduction of text and illustrations.

Binding Type:

N/A (Digital Download - No physical binding)

Paper Type:

N/A (Digital Download - No physical paper)

⚙️ Engine Specifications

Engine Variants:

Primarily known for its Twin Spark 4-cylinder engines (1.8L, 2.0L) and the iconic 2.5L V6 (Busso engine) in the later Q4 and V6 models. Specific engine codes and displacements vary by market and model year.

Typical Performance 2.0 Ts:

Approx. 150-155 PS (110-114 kW) and 185-195 Nm torque. Q4 and V6 variants offered significantly higher performance figures.

Fuel System Type:

Electronic Fuel Injection (EFI), with specific Bosch or Magneti Marelli systems depending on engine and year. Features like variable valve timing were present on some Twin Spark engines.

Common Engine Code 2.0 Ts:

AR671.01, AR671.02 (examples, specific codes vary significantly by year and market).

🔧 Transmission

Standard Transmission:

5-speed Manual Transmission (Getrag or Fiat gearbox)

Optional Transmission:

4-speed Automatic Transmission (ZF)

Transmission Features:

The Q4 variant featured a unique all-wheel-drive system (Viscodrive) with a Torsen center differential and a rear limited-slip differential for enhanced traction and dynamic performance.

📐 Dimensions

Wheelbase:

Approx. 2600 mm (variable slightly by year/variant)

Length:

Approx. 4450 mm

Width:

Approx. 1700 mm

Height:

Approx. 1420 mm

Curb Weight:

Approx. 1250-1400 kg (depending on engine and configuration)

Gross Vehicle Weight:

Refer to vehicle's VIN plate or owner's manual for exact GVWR, typically around 1800-1900 kg.

🛡️ Safety Features

Safety Ratings:

Euro NCAP crash test data for the 155 is limited, but it was designed with driver and passenger safety as a priority for its era. Later models offered optional ABS and driver airbags.

Active Safety Features:

Optional Anti-lock Braking System (ABS), powerful disc brakes all around (ventilated front), precise steering.

Passive Safety Features:

Front and optional side airbags, crumple zones, reinforced passenger cell, seatbelt pretensioners.

Seatbelt System:

3-point inertia reel seatbelts with pre-tensioners for front occupants, 3-point lap and diagonal seatbelts for rear occupants.

💡 Technology Features

Infotainment Features:

Basic infotainment systems for its era, typically featuring an AM/FM radio with cassette player, and optional CD player. Speaker system quality varied by trim level.

Driver Assistance Features:

Optional ABS, power steering. Advanced driver assistance systems were not common in this segment during the 155's production run.

Connectivity Features:

Limited to basic audio inputs (e.g., auxiliary input for CD changer or aftermarket devices). No modern Bluetooth or USB connectivity from factory.

🔧 Maintenance

Oil Change Interval:

Typically 10,000 km or 12 months (refer to manual for specific recommendations based on oil type and driving conditions).

Timing Belt Replacement:

Crucial for Twin Spark engines, typically every 60,000 km or 5 years due to high risk of catastrophic engine damage if it breaks. V6 models use a timing chain or belt depending on the specific engine variant.

Engine Oil Specification:

API SG/SH or ACEA A2/A3, viscosity grade 10W-40 or 15W-40 recommended, though specific grades like 5W-40 synthetic may be preferred for modern use. Refer to manual for exact OEM specifications.

Coolant Specification:

Ethylene Glycol based antifreeze, typically mixed 50/50 with distilled water. Refer to manual for specific OEM approved coolant type.

Brake Fluid Specification:

DOT 3 or DOT 4 brake fluid, depending on the system (check manual for ABS systems).

Transmission Fluid Manual:

GL-4 or GL-5 manual transmission fluid, typically 75W-90 or 80W-90 viscosity. Refer to manual for exact specification and capacity.

Transmission Fluid Automatic:

Dexron III or equivalent ATF fluid for the automatic transmission. Refer to manual for exact specification and capacity.

Common Issues Twin Spark:

Twin Spark ignition system (spark plug fouling, ignition coil failures), minor oil leaks, occasional electrical gremlins, exhaust manifold cracks on some early models, cambelt failure risk if not replaced on schedule.

Common Issues General:

Rust ingress in common areas (wheel arches, sills), aging suspension bushings, clutch wear, potential for air flow meter (AFM) issues on older fuel injection systems.

Vacuum Lines:

Aging and brittle vacuum hoses can lead to various running issues, including poor idle, hesitation, and check engine light illumination. Replacement of these is common preventative maintenance.

📚 Vehicle History

Brand Heritage:

Alfa Romeo boasts a rich motorsport heritage and a reputation for producing stylish, performance-oriented vehicles with a distinct Italian character. The 155 continued this tradition.

Model Evolution:

Introduced in 1992, the Alfa Romeo 155 replaced the 75. It was based on the Fiat Tipo platform. A significant facelift occurred in 1995, bringing updated styling (especially the front end) and interior refinements, often referred to as the 'Series 2' or 'Restyling'.

Facelift Details:

The 1995 facelift introduced new headlights, grille, side skirts, and improved interior materials, making the car appear more modern and aligning it with Alfa Romeo's contemporary design language.

Production Years:

1992 - 1997

Manufacturing Location:

Italy

🏆 Awards & Recognition

Motorsport Success:

The Alfa Romeo 155 achieved significant success in touring car racing, most notably winning the German DTM championship in 1993 with Nicola Larini driving an Evo model. This motorsport pedigree contributed to its sporty image.