Segment:
Compact executive car (D-segment)
Key Competitors:
BMW 3 Series (E36), Mercedes-Benz C-Class (W202), Audi A4 (B5), Ford Mondeo, Vauxhall/Opel Vectra.
Design Philosophy:
Blended the mechanical sophistication of Alfa Romeo with a more practical and spacious design compared to its predecessor, the 75.
Unique Selling Points:
Distinctive Italian styling, engaging driving dynamics, advanced engine technology (Twin Spark, V6 Busso), availability of Q4 all-wheel-drive.
Market Regions:
Global (primarily Europe)
Vehicle Variants:
All Alfa Romeo 155 variants produced between 1992 and 1998, including saloon/sedan body styles and Q4 all-wheel-drive models.
Estimated Pages:
Thousands (typical for comprehensive workshop manuals)
Type:
Professional Workshop Service & Repair Manual
Digital Format:
Acrobat PDF
Compatibility:
Windows & MAC compatible
Powertrain:
Engine mechanical (including Twin Spark and V6 Busso), engine management, fuel system, cooling system, lubrication system, exhaust system.
Drivetrain:
Manual and automatic transmissions, clutch, differentials, drive shafts, Q4 all-wheel-drive system.
Chassis:
Suspension (front and rear), steering system, brake system (including ABS), wheel and tire specifications.
Electrical:
Complete wiring diagrams, ignition system, lighting, instrumentation, power distribution, electronic control units (ECUs), audio system, air conditioning.
Body:
Body structure, exterior panels, doors, windows, interior trim, climate control system, safety restraints (airbags, seatbelts).
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, brake fluid flush, coolant replacement, timing belt replacement.
Repair:
Engine overhaul, transmission rebuild, suspension component replacement, brake caliper overhaul, steering rack repair, electrical component diagnosis and repair, body panel repair.
Diagnostics:
Troubleshooting guides, diagnostic trouble codes (DTCs), component testing procedures, use of diagnostic tools.
Depth:
Comprehensive, from basic adjustments to complete vehicle teardown and reassembly, including engine and transmission rebuilds.
Diagnostic Capability:
Factory-level diagnostic procedures and specifications, enabling professional-grade troubleshooting.
Variant 1 Engine:
1.7L 8v Twin Spark (AR671.03), 2.0L 16v Twin Spark (AR167.05)
Variant 2 Engine:
2.5L V6 24v 'Busso' (AR161.04), 3.0L V6 24v 'Busso' (AR161.05) for Q4
1.7 Ts Power:
115 PS (85 kW; 113 hp)
2.0 Ts Power:
150 PS (110 kW; 148 hp)
2.5 V6 Power:
192 PS (141 kW; 189 hp)
3.0 V6 Q4 Power:
190 PS (140 kW; 187 hp)
Injection Type:
Electronic multi-point fuel injection (MPI) with Bosch Motronic or similar engine management systems.
Fuel Type:
Unleaded gasoline (Octane rating typically 95 RON or higher)
Transmission Type Common:
5-speed manual gearbox
Transmission Type Optional:
4-speed automatic (e.g., ZF 4HP18, J-Type)
Q4 Drivetrain:
Permanent all-wheel-drive system with viscous coupling and Torsen center differential for Q4 models.
Length:
Approx. 4400 mm (173.2 in)
Width:
Approx. 1700 mm (66.9 in)
Height:
Approx. 1420 mm (55.9 in)
Curb Weight:
Varies by engine and specification, typically 1250-1450 kg (2755-3197 lbs)
Euro Ncap Rating:
Not directly tested by Euro NCAP in its early format, but generally considered competitive for its era.
Active Safety:
Anti-lock Braking System (ABS) often standard or optional, power-assisted steering.
Passive Safety:
Front airbags (driver and passenger), crumple zones, reinforced passenger cell, side-impact protection beams.
Audio System:
Factory-fitted radio/cassette player with speaker systems, often with optional CD player. Aftermarket upgrades common.
ABS:
Anti-lock Braking System (ABS) generally available on higher trim levels or as an option.
Connectivity Features:
Limited by modern standards; basic power windows, central locking, and electric mirror controls.
Oil Change Interval:
Typically 10,000-15,000 km (6,000-9,000 miles) or 12 months, whichever comes first.
Timing Belt Replacement:
Crucial for Twin Spark and V6 engines; typically every 60,000 km (37,000 miles) or 3-4 years, depending on engine variant and conditions. Consult manual for exact intervals.
Engine Oil:
Refer to manual for specific viscosity grades (e.g., Selenia 10W-40, 10W-50) depending on engine and climate. Twin Spark often requires specific oil formulations.
Coolant:
Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water. Specific Alfa Romeo approved coolant recommended.
Brake Fluid:
DOT 4 (or DOT 3 if specified by manufacturer for certain systems).
Transmission Fluid Manual:
GL-4 or GL-5 gear oil (specific viscosity as per manual, e.g., 75W-90).
Transmission Fluid Automatic:
ATF Dexron-II or Dexron-III, or equivalent as specified by the transmission manufacturer (e.g., ZF).
Rust Corrosion:
Common issue on older vehicles, particularly around wheel arches, sills, and boot lid edges.
Twin Spark Engine Wear:
Potential for wear on valve guides and oil consumption in higher mileage Twin Spark engines. Correct ignition setup (dual plugs) is critical.
Busso V6 Engine:
Known for its beautiful sound but can be complex to maintain; timing belt and water pump maintenance are critical. Cam phasing issues on some variants.
Electrical Gremlins:
As with many Italian cars of this era, electrical issues can arise; grounding points, wiring loom integrity, and sensor failures are common areas of concern.
Suspension Wear:
Bushings and shock absorbers can wear over time, affecting handling and ride comfort.
