🏷️ Basic Information Identification Make: Pontiac Model: LeMans Year: 1990 Generation Generation Name: Fourth Generation (GM 'J-body') Codes Platform Code: GM J-body 👋 Introduction Market Position Segment: Compact/Subcompact car segment. Competitive Analysis Competitors: Chevrolet Cavalier, Oldsmobile Firenza, Buick Skyhawk, Ford Escort, Dodge Omni. Key Features Advantages Of Software: Instant access, convenience over print, cost-effectiveness, compatibility across devices, licensed OE information. Developer: RepairSurge (Licensed by OE). Access Duration: 1 Year included, with discounts for extensions. 📋 Manual Details Coverage Areas General Coverage: Comprehensive service and repair information for the 1990 Pontiac LeMans. Page Count Estimated Pages: Likely several hundred pages, typical for factory-derived software manuals covering all aspects. Manual Type Type: Digital Service and Repair Manual Language Language: English Format Format: Online Software Access (Web Browser Based) 📖 Manual Coverage Systems Covered Engine: Engine mechanical, fuel system, ignition system, emissions control, cooling system, lubrication system, engine diagnostics. Transmission: Manual and automatic transmission repair, overhaul, fluid specifications, and diagnostics. Drivetrain: Front-wheel drive system, axle shafts, CV joints, differential. Brakes: Hydraulic system, disc and drum brake service, parking brake, ABS (if equipped). Suspension: Front and rear suspension components, steering linkage, alignment specifications. Steering: Power steering system, steering column, tie rods, steering rack/gearbox. Electrical: Wiring diagrams, charging system, starting system, lighting, accessories, instrument cluster, body control modules. Climate Control: Heating, ventilation, and air conditioning (HVAC) system operation and repair. Body And Trim: Exterior body panels, interior trim, doors, glass, seals, bumpers. Procedures Included Maintenance: Routine maintenance, oil changes, filter replacements, fluid checks, tune-ups, scheduled service intervals. Diagnostics: Troubleshooting guides, symptom-based diagnostics, fault code interpretation (OBD-I). Repair: Step-by-step repair procedures for all major systems, including component removal, overhaul, and reinstallation. Special Tools: Identification and usage of specialized tools required for specific repairs. Troubleshooting Charts: Detailed symptom-to-cause diagnostic flowcharts for common problems. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission overhauls. Includes detailed diagnostic procedures. Torque Specifications: Precise torque values for all critical fasteners (engine, suspension, brakes, etc.). Wiring Diagrams: Comprehensive, system-by-system electrical wiring schematics. Diagnostic Codes: Information on interpreting OBD-I diagnostic codes specific to GM vehicles of this era. 📊 Manual Specifications File Format Digital Format: Web-based access, compatible with PC, laptop, smartphone, tablet. Print Quality Digital Quality: High-resolution, clear text and diagrams derived from OE materials. Binding Type Access Method: Subscription-based online access via web browser. Paper Type Digital Medium: Digital ⚙️ Engine Specifications Primary Engine Engine Options: 1.6L L4 (4EC1), 2.0L L4 (20SEH - Quad 4, SOHC, optional in some trims/markets), 2.3L L4 (LG2 - Quad 4, DOHC, optional in some trims/markets), 3.1L V6 (3100 SFI, optional in some trims/markets). Performance Horsepower Range: Approx. 88 hp (1.6L) to 180 hp (2.0L Quad 4 HO). Torque Range: Varies by engine, e.g., approx. 98 lb-ft (1.6L). Fuel System Injection Type: Multi-point Fuel Injection (MPFI) or Throttle Body Injection (TBI) depending on engine and trim. Fuel Type: Unleaded gasoline. Engine Codes Engine Code Example: 1.6L I4: 4EC1; 2.0L DOHC I4: 20SEH; 2.3L DOHC I4: LG2. 🔧 Transmission Standard Standard Transmission: 5-speed manual transmission. Optional Optional Transmission: 3-speed automatic transmission (THM-3T40). Features Drive Type: Front-Wheel Drive (FWD). 📐 Dimensions Exterior Body Styles: Coupe (2-door), Sedan (4-door), Hatchback (3-door, sometimes referred to as 'Berlina' or 'LE'). Wheelbase: Approx. 98.5 inches (2502 mm). Length: Approx. 170-176 inches (4318-4470 mm) depending on body style. Weights Curb Weight: Approx. 2500-2700 lbs (1134-1225 kg) depending on configuration. 🛡️ Safety Features Ratings Crash Test Information: Information may be limited for this era; the manual would likely detail structural components and safety system operation rather than specific NHTSA ratings. Active Features Braking System: Front disc brakes, rear drum brakes. Optional ABS system on some models. Passive Features Seatbelts: Standard seat belts (lap and shoulder belts). Airbags: Driver-side airbag was an option or standard on higher trims for 1990. 💡 Technology Features Infotainment Audio System: Factory AM/FM radio, optional cassette player or CD player on higher trims. Basic speaker systems. Driver Assistance ABS: Anti-lock Braking System (ABS) available as an option on some models. Cruise Control: Cruise control available as an option. Connectivity Connectivity Features: No modern connectivity features (Bluetooth, USB, etc.) available from the factory. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles (4,800-8,000 km) or 3-6 months, depending on driving conditions and oil type. Tune Up Interval: Spark plugs and air filter typically at 30,000-60,000 miles (48,000-96,000 km). Fluid Specifications Engine Oil: API SG, SAE 5W-30 or 10W-30 (check owner's manual for specific viscosity based on temperature). Transmission Fluid: Dexron-III (ATF) for automatic transmissions; manual transmission gear oil (e.g., GL-4) for manuals. Coolant: Ethylene glycol based coolant, typically a 50/50 mix with distilled water. Known Issues Common Problems: Rust (especially wheel wells, rocker panels), aging plastic components, potential issues with ignition control module, exhaust system leaks, AC system recharge/leaks. Power Steering Quirks: Potential for...