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BMW 750iL 1990 Factory Service Repair Manual
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🏷️ Basic Information Identification Make: BMW Model: 750iL Year: 1990 Product Name: BMW 750iL 1990 Factory Service Repair Manual Download PDF Chassis Code: E32 Market Segment: Full-Size Luxury Sedan 👋...
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🏷️ Basic Information
Identification
Make:
BMW
Model:
750iL
Year:
1990
Product Name:
BMW 750iL 1990 Factory Service Repair Manual Download PDF
Chassis Code:
E32
Market Segment:
Full-Size Luxury Sedan
👋 Introduction
Market Position
Positioning:
Flagship luxury sedan, representing BMW's pinnacle of engineering and comfort in its era.
Competitive Analysis
Competitors:
Mercedes-Benz S-Class, Jaguar XJ, Lexus LS 400, Cadillac DeVille.
Key Features
Defining Attributes:
The V12 engine, opulent interior, long wheelbase (L), advanced (for its time) technology, and refined driving dynamics.
Manual Value Proposition
Value For Owner:
Essential for maintaining the complex and sophisticated systems of the 750iL, enabling DIY repairs and informed servicing.
📋 Manual Details
Coverage Areas
Systems Covered:
Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, Climate Control, Fuel System, Exhaust System, Body, Chassis, Interior, Diagnostics
Page Count
Estimated Pages:
Hundreds (Specific count not provided, but implied to be comprehensive)
Manual Type
Type:
Factory Service Repair Manual
Language
Language:
English
Format
Format:
Downloadable PDF
📖 Manual Coverage
Systems Covered
Engine Mechanical:
V12 Engine (M70), cylinder head, block, pistons, crankshaft, camshafts, timing, lubrication, cooling
Engine Management:
Bosch Motronic M1.2 electronic fuel injection and ignition, sensor diagnostics, actuator testing
Transmission Mechanical:
4-speed Automatic Transmission (Getrag 4HP22), torque converter, valve body, gear sets, clutches, seals
Transmission Electronic:
Electronic transmission control unit (EGS), shift solenoids, speed sensors, diagnostic codes
Drivetrain:
Rear-wheel drive, driveshaft, differential, axles, wheel bearings
Suspension Front:
MacPherson struts, control arms, ball joints, anti-roll bar, springs, shock absorbers
Suspension Rear:
Multi-link independent suspension, trailing arms, control arms, springs, shock absorbers, self-leveling suspension (optional, check for details)
Steering:
Hydraulic power steering, steering rack, steering column, power steering pump, fluid specifications
Brakes Front:
Ventilated Disc Brakes, caliper specifications, pad replacement, rotor specifications, ABS (Anti-lock Braking System)
Brakes Rear:
Disc Brakes, caliper specifications, pad replacement, rotor specifications, ABS (Anti-lock Braking System)
Electrical System Lighting:
Headlights, taillights, interior lights, bulb specifications, wiring diagrams
Electrical System Charging:
Alternator, voltage regulator, battery specifications, charging system diagnostics
Electrical System Starting:
Starter motor, ignition switch, starter solenoid, battery draw testing
Electrical System Accessories:
Power windows, power seats, power mirrors, central locking, sunroof, cruise control, heated seats
Climate Control:
HVAC system, blower motor, air conditioning (R-12 refrigerant), heating system, cabin filter, control panel diagnostics
Fuel System:
Fuel tank, fuel pump, fuel filter, fuel injectors, fuel pressure testing, fuel lines
Exhaust System:
Exhaust manifolds, catalytic converters, mufflers, exhaust pipes, hangers, emissions control systems
Body Exterior:
Body panels, doors, fenders, hood, trunk lid, bumpers, glass replacement, seals
Body Interior:
Dashboard, seats, door panels, headliner, carpets, trim components, seat belt maintenance
Diagnostics:
On-Board Diagnostics (OBD) for the era, fault codes, diagnostic connector location, troubleshooting flowcharts
Procedures Included
Maintenance Tasks:
Oil changes, filter replacements, spark plug replacement, coolant flush, brake fluid flush, transmission fluid service, differential fluid change
Repair Procedures:
Engine component removal and installation, transmission overhaul, suspension component replacement, brake caliper overhaul, starter/alternator replacement, fuel pump replacement
Troubleshooting:
System-specific diagnostic trees, common problem identification, symptom-based troubleshooting guides
Specifications:
Torque specifications for all fasteners, electrical system schematics, vacuum hose routing diagrams, alignment specifications
Special Tools:
List and description of required special tools for specific repair procedures (e.g., engine timing tools, suspension alignment tools)
Technical Depth
Depth:
Comprehensive, covering routine maintenance, complex repairs, component overhauls, and advanced diagnostics
📊 Manual Specifications
File Format
Format:
PDF
Print Quality
Printability:
High-quality, printable pages
Binding Type
Binding Type:
N/A (Downloadable PDF)
Paper Type
Paper Type:
N/A (Digital Format)
Searchability
Search Functionality:
Searchable text within the PDF document
Digital Features
Hyperlinks:
Likely includes internal links for navigation (typical for professional PDFs)
⚙️ Engine Specifications
Primary Engine
Engine Code:
M70B50
Engine Type:
SOHC V12
Displacement:
5.0 Liters (4988 cc)
Performance
Horsepower:
296 hp @ 5200 rpm
Torque:
332 lb-ft @ 4100 rpm
Fuel System
Fuel Delivery:
Bosch Motronic M1.2 Electronic Fuel Injection (EFI) with two ECUs, one for each cylinder bank
Fuel Type
Fuel Requirement:
Premium Unleaded Gasoline (91+ octane)
Cooling System
Coolant Type:
BMW Blue Antifreeze (G48 or equivalent) mixed 50/50 with distilled water
Lubrication System
Oil Capacity With Filter:
7.5 Liters (7.9 Quarts)
Recommended Oil Viscosity:
15W-40 or 10W-40 (refer to owner's manual for climate specifics)
🔧 Transmission
Standard
Type:
4-speed Automatic (Getrag 4HP22 EH)
Optional
Optional Transmission:
N/A (Automatic only for 750iL)
Features
Electronic Control:
Electronic Gearbox Control (EGS) for optimized shift points and smoother operation
Fluid Capacity
Transmission Fluid Capacity:
Approximately 10 Liters (10.6 Quarts) for complete fill (refer to manual for specific procedure)
Fluid Specification
Transmission Fluid Type:
Dexron III or equivalent (BMW ATF LT 71141 is a common modern substitute, but verify with manual)
📐 Dimensions
Exterior
Wheelbase:
3028 mm (119.2 inches)
Length:
5124 mm (201.7 inches)
Width:
1800 mm (70.9 inches)
Height:
1420 mm (55.9 inches)
Weights
Curb Weight:
Approximately 1950 kg (4300 lbs)
Gross Vehicle Weight Rating:
Approx. 2480 kg (5467 lbs)
Cargo
Trunk Volume:
Approximately 500 liters (17.6 cubic feet)
🛡️ Safety Features
Ratings
NHTSA Rating:
N/A for this era (Official standardized ratings were not prevalent)
Active Features
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Optional ASC+T (Automatic Stability Control + Traction)
Passive Features
Airbags:
Driver's airbag standard, passenger airbag optional (check specific vehicle)
Seat Belts:
3-point seat belts front and rear, pre-tensioners for front belts
Chassis Safety:
Reinforced passenger cell, crumple zones
💡 Technology Features
Infotainment
Audio System:
Premium sound system (e.g., Nakamichi or BMW Bavaria C Professional), CD changer option.
Navigation:
Optional early-generation navigation system (BMW Professional Navigation System)
Driver Assistance
Cruise Control:
Standard electronic cruise control
Parking Assistance:
Optional rear parking sensors (Park Distance Control)
Connectivity
Phone System:
Optional integrated car phone (era-appropriate)
Comfort Features
Seats:
Power-adjustable front seats with memory, heated front and rear seats (optional)
Climate Control System:
Dual-zone automatic climate control
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically 7,500-10,000 miles or annually (check manual for specific BMW recommendations)
Transmission Service:
Recommended every 30,000-50,000 miles (fluid and filter change)
Spark Plug Replacement:
100,000 miles (Long-life spark plugs, e.g., Bosch FGR7KQE0)
Fluid Specifications
Brake Fluid Type:
DOT 4 (BMW part number 81 22 9 400 302 or equivalent)
Power Steering Fluid Type:
BMW Hydraulic Fluid (or Pentosin CHF 11S, verify with manual)
Coolant Capacity:
Approximately 13.5 Liters (14.3 Quarts)
Known Issues
Engine M70:
Cooling system leaks (water pump, hoses), VANOS issues (later models, not on M70), ignition coil failures, oil leaks from valve cover gaskets and oil pan, idle control valve issues.
Transmission 4Hp22:
Solenoid issues, torque converter problems, electronic control unit (EGS) failure, leaks from seals.
Electrical System:
Wiring harness degradation (especially engine bay), failure of comfort electronics modules (e.g., door modules), ABS sensor issues, headlight leveling system problems.
Suspension:
Worn control arm bushings, failing ball joints, shock absorber degradation, potential issues with self-leveling rear suspension (if equipped).
Body:
Rust formation (especially in wheel wells, rocker panels, and around windows), headliner sagging, door seal degradation.
📚 Vehicle History
Brand Heritage
Bmw Legacy:
BMW has a long-standing reputation for building driver-focused, high-performance luxury vehicles.
Model Evolution
E32 Generation:
The E32 generation (1986-1994) marked a significant advancement in BMW's luxury sedan offerings, introducing advanced electronics and comfort features.
750Il Introduction:
The 750iL, introduced in 1987, was the flagship model, showcasing BMW's first production V12 engine.
Production
Production Years E32:
1986-1994
Production Years 750Il:
1987-1994
Manufacturing Location
Factory:
Dingolfing, Germany
🏆 Awards & Recognition
Recognitions
Car And Driver 10 Best:
The E32 7-Series was frequently cited for its refinement and technology, though specific awards for the 1990 750iL might be scattered.
Ratings
Motoring Reviews:
Contemporary reviews praised its powerful V12 engine, luxurious ride, and sophisticated handling for a large sedan.
Certifications
Iso Certification:
N/A (Automotive standards specific to the vehicle, not manual certifications)