Target Audience:
Diablo owners with mechanical inclination, independent Lamborghini specialists, automotive restoration shops.
Comparable Vehicles:
Ferrari F40, Porsche 959, McLaren F1 (contemporary competitors in terms of performance and price point).
Manual Advantage:
Provides factory-level diagnostic and repair information, empowering owners and independent technicians to maintain and repair the vehicle accurately, saving significant costs.
Content Type:
Vehicle-specific, not generic. Contains diagrams, illustrations, wiring schematics, and exact specifications.
Primary Coverage:
Service, Repair, Troubleshooting, Maintenance
Specific Systems:
Engine Mechanical, Engine Electrical, Emission Control, Fuel System, Clutch, Manual Transaxle, Automatic Transaxle, Driveshaft/Axle, Suspension, Steering, Restraint System, Brake System, Body (Interior/Exterior), Body Electrical, HVAC
Estimated Page Count:
Refer to original manufacturer documentation for precise count. Typically extensive for supercars.
Type:
Service Repair Workshop Manual
Engine Mechanical:
Detailed breakdown of V12 engine components, cylinder head service, piston and connecting rod service, crankshaft service, timing system, lubrication system, cooling system.
Engine Electrical:
Ignition system, starting system, charging system, engine control unit (ECU) diagnostics, sensor testing.
Fuel System:
Fuel injection system (Bosch Motronic), fuel pump, fuel injectors, fuel pressure regulator, fuel tank service.
Transmission:
Manual transaxle (typically 5-speed), clutch system, viscous traction system (VT variant), driveshaft, CV joints, axle shafts.
Suspension:
Front and rear suspension components, shock absorbers, springs, control arms, anti-roll bars, wheel bearing service.
Steering:
Power steering system, steering rack, steering column, alignment specifications.
Brakes:
Hydraulic brake system, ABS operation (if equipped), brake pad and rotor replacement, brake fluid specifications, caliper service.
Body Electrical:
Lighting system, power windows, power locks, instrument cluster, alarm system, exterior lighting diagnostics.
HVAC:
Air conditioning system service, heater core, blower motor, climate control unit.
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements, fluid checks and changes, spark plug replacement.
Troubleshooting:
Diagnostic procedures for common and uncommon faults, symptom-based troubleshooting guides, fault code interpretation (if applicable).
Repair:
Step-by-step repair instructions for all major mechanical and electrical components, including engine and transmission overhaul, suspension rebuilds, brake system repairs, body panel repair, electrical system diagnosis and repair.
Diagnostics:
Detailed diagnostic trees, wiring diagrams for component testing, expected voltage and resistance readings.
Depth:
Comprehensive, covering basic maintenance to complete engine and drivetrain rebuilds. Includes detailed torque specifications, tolerances, and adjustment procedures.
Engine Type:
Naturally Aspirated V12
Displacement:
5.7 Liters (5706 cc)
Horsepower:
Approx. 492 hp @ 6,800 rpm (Diablo VT), 492 hp @ 7,200 rpm (Diablo 2WD)
Torque:
Approx. 428 lb-ft @ 5,500 rpm (Diablo VT), 427 lb-ft @ 5,200 rpm (Diablo 2WD)
Fuel Delivery:
Multi-point Fuel Injection (MPI) with Bosch Motronic M2.7 or M2.10 engine management system.
Fuel Type:
Premium Unleaded Gasoline (91+ octane recommended)
Oil Type:
Refer to manual for specific viscosity (e.g., SAE 10W-60 or 15W-50 depending on climate).
Oil Capacity:
Refer to manual (typically around 10-12 liters).
Length:
Approx. 4,480 mm (176.4 in)
Width:
Approx. 2,040 mm (80.3 in)
Height:
Approx. 1,100 mm (43.3 in)
Curb Weight:
Approx. 1,570 kg (3,461 lbs) for 2WD, Approx. 1,690 kg (3,726 lbs) for VT
Wheelbase:
Approx. 2,650 mm (104.3 in)
Crash Test Data:
Limited official crash test data available for exotic vehicles of this era. Primary safety focus on driver control and chassis rigidity.
ABS:
Anti-lock Braking System (ABS) typically standard on VT, optional or standard on 2WD depending on specific market.
Airbags:
Driver airbag standard. Passenger airbag availability may vary by market and specific build.
Seatbelts:
Three-point inertia-reel seatbelts.
Audio System:
Basic AM/FM radio and cassette player, often with premium branded speakers (e.g., Alpine). Early models may have limited integration.
ABS System:
Anti-lock Braking System for enhanced braking control.
Factory Connectivity:
Limited to basic functions such as power windows, power mirrors, and climate control. No modern connectivity features like Bluetooth or USB.
Oil Change Interval:
Refer to manual. Typically every 5,000-7,500 miles or annually. Check oil condition frequently.
Timing Belt Interval:
Refer to manual. Crucial for V12 engines. Typically around 30,000 miles or 3-5 years due to age. Belt failure is catastrophic.
Engine Oil:
Refer to manual for exact viscosity grade (e.g., SAE 10W-60, 15W-50) and API service classification.
Coolant:
Ethylene Glycol based antifreeze. Refer to manual for specific type and mix ratio.
Brake Fluid:
DOT 4 or DOT 5.1 (check manual for precise specification). Must be replaced periodically.
Transmission Fluid:
Refer to manual for specific gear oil grade (e.g., GL-5).
Common Concerns:
Fuel delivery system issues (clogged injectors, weak fuel pumps), aging electrical components and wiring harnesses, clutch wear, cooling system leaks, aging suspension bushings.
Performance Considerations:
Due to age and exotic nature, regular preventative maintenance and expert inspection are paramount to reliability and performance preservation.
Manufacturer:
Automobili Lamborghini S.p.A.
Diablo Introduction:
The Diablo succeeded the Countach, continuing Lamborghini's lineage of mid-engined V12 supercars. The 1994 models represent the refinement of the original Diablo design.
Vt Introduction:
The VT variant, introduced in 1993, added a viscous coupling all-wheel-drive system for improved traction and stability.
Production Period:
Diablo production spanned from 1990 to 2001. The 1994 model falls within the early-to-mid production run.
Manufacturing Location:
Sant'Agata Bolognese, Italy
