🏷️ Basic Information Identification Make: Oldsmobile Model: Cutlass Ciera Year: 1991 Codes Platform Code: GM N-body 👋 Introduction Market Position Positioning: A cornerstone mid-size sedan for Oldsmobile during the late 80s and early 90s, offering comfort and practicality. Competitive Analysis Competitors: Competed against vehicles like the Chevrolet Celebrity, Buick Century, and Ford Taurus. Key Features Unique Selling Points: Known for its comfortable ride, spacious interior, and fuel-efficient options, making it a popular family car. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive Service and Repair Page Count Estimated Page Count: Variable, digital format typically equivalent to several hundred pages of printed text and diagrams Manual Type Type: Digital Service and Repair Manual Software Language Language: English Format Format: Online, browser-based access 📖 Manual Coverage Systems Covered Engine: Full coverage including diagnostics, maintenance, repair, and overhaul for all available engine options. Transmission: Covers automatic transmission diagnostics, repair, fluid service, and component replacement. Brakes: Detailed information on hydraulic systems, brake pads, rotors, calipers, parking brake, and ABS (if equipped). Steering: Power steering system diagnostics, repair, fluid, and steering gear/rack replacement. Suspension: Front and rear suspension components, shock absorbers, struts, control arms, bushings, and alignment procedures. Electrical: Extensive coverage of wiring diagrams, component testing, charging system, starting system, lighting, and accessories. HVAC: Air conditioning and heating system diagnostics, refrigerant service, blower motor, and climate control components. Body: Exterior and interior trim, body panels, doors, windows, locks, and related mechanisms. Procedures Included Maintenance: Routine maintenance tasks such as oil changes, filter replacements, spark plug service, and fluid checks. Troubleshooting: Systematic diagnostic procedures for identifying and resolving common and complex vehicle issues. Repair: Step-by-step repair instructions for virtually all mechanical and electrical components. Rebuilds: Detailed procedures for engine and transmission overhauls. Technical Depth Depth: Factory-level technical information for both DIY enthusiasts and professional technicians. 📊 Manual Specifications File Format Digital Format: Web-based access via HTML5, compatible with modern web browsers. Print Quality Print Capability: Pages can be printed from the web browser interface. Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine 1 Code: LN3 Engine 1 Displacement: 2.8 L (173 cu in) Engine 1 Configuration: V6, Overhead Valve (OHV) Engine 1 Horsepower: 125 hp @ 4800 rpm Engine 1 Torque: 150 lb-ft @ 2400 rpm Optional Engine Engine 2 Code: LB4 Engine 2 Displacement: 3.1 L (189 cu in) Engine 2 Configuration: V6, Overhead Valve (OHV), Tuned Port Injection (TPI) Engine 2 Horsepower: 140 hp @ 4400 rpm (approx.) Engine 2 Torque: 170 lb-ft @ 3200 rpm (approx.) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Throttle Body Injection (TBI) or Tuned Port Injection (TPI) depending on engine. 🔧 Transmission Standard Transmission Type Standard: 3-speed Automatic (THM-125C) Optional Transmission Type Optional: 4-speed Automatic (4T60) Features Transmission Features: Front-wheel drive (FWD) for all models. 📐 Dimensions Exterior Wheelbase: 104.9 inches Length: 191.1 inches Width: 69.1 inches Height: 53.5 inches Weights Curb Weight: Approx. 2900 - 3100 lbs (depending on configuration) 🛡️ Safety Features Ratings NHTSA Ratings: Specific NHTSA ratings for 1991 models are not readily available in a consolidated format but generally reflected the safety standards of the era. Active Features Active Safety: Standard front disc/rear drum brakes. Optional Anti-lock Braking System (ABS) available on higher trims. Passive Features Passive Safety: Seat belts (driver and passenger side airbags were not standard equipment for this model year). 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM stereo radio with cassette player. Optional CD player available on some trims. Driver Assistance Cruise Control: Optional cruise control system was available on many trims. Connectivity Connectivity Features: Basic analog systems; no advanced electronic connectivity features typical of modern vehicles. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 3,000 miles or 3 months, whichever comes first, using conventional or synthetic oil as per manual. Tune Up Interval: Spark plug and filter replacement recommended around 30,000-60,000 miles, depending on driving conditions. Fluid Specifications Engine Oil Type: API SG service category oil, SAE 10W-30 or 5W-30 recommended depending on climate. Transmission Fluid Type: Dexron-III (or equivalent) automatic transmission fluid. Coolant Type: Ethylene glycol based antifreeze, typically a 50/50 mix with distilled water. Known Issues Common Wear Items: Wear on suspension components (struts, ball joints, bushings), potential for head gasket leaks in V6 engines, and aging electrical connectors. Common Engine Problems: Vibration issues, minor oil leaks, and sensitivity to cooling system maintenance on the V6 engines. 📚 Vehicle History Brand Heritage Oldsmobile Legacy: Oldsmobile was one of America's oldest automotive brands, known for innovation and catering to a mature market, often blending performance and comfort. Model Evolution Cutlass Ciera Lineage: The Cutlass Ciera was part of the larger Cutlass family and was a significant model for Oldsmobile, sharing its platform with other GM vehicles. Production Production Years: 1982-1996 Manufacturing Location: General Motors assembly plants...