🏷️ Basic Information Identification Make: Isuzu Model: Impulse Year: 1991 Generation Generation Code: Second Generation (JT) Codes Chassis Code: JT221 👋 Introduction Market Position Positioning: The Isuzu Impulse was positioned as a sporty, stylish compact coupe, often competing with models like the Honda CR-X and Toyota MR2, offering a unique design and engaging driving experience. Competitive Analysis Competitors 1991: Honda CR-X, Toyota MR2, Nissan 240SX, Mazda MX-3. Key Features Manual Features: Officially licensed, factory-derived OE materials, licensed by RepairSurge, instant online access, year-long subscription, comprehensive coverage. Value Proposition Customer Benefit: Cost savings on repairs, empowerment for DIYers, access to accurate and reliable service information, convenience over printed manuals. 📋 Manual Details Coverage Areas Manual Scope: Comprehensive Service and Repair Page Count Estimated Page Count: Detailed (specific count not provided, but OE quality implies thousands of pages of information when compiled) Manual Type Type: Service and Repair Manual Software Language Language: English Format Format: Online Software/Web-Based Access 📖 Manual Coverage Systems Covered Engine: Engine mechanical, lubrication, cooling, fuel, ignition, emission control systems, engine management, diagnostics. Transmission: Manual and Automatic Transmission systems, clutch, drive axles, differentials. Brakes: Hydraulic brake system, ABS (if equipped), parking brake, component inspection and replacement. Steering: Power steering system, steering column, linkage, alignment procedures. Suspension: Front and rear suspension components, shock absorbers, springs, control arms, bushings. Electrical: Wiring diagrams, lighting systems, charging system, starting system, accessories, body electronics, diagnostics. HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system operation, components, and service. Body: Body panels, doors, windows, interior trim, exterior trim, chassis, corrosion protection. Procedures Included Maintenance: Recommended maintenance schedules, fluid changes, filter replacements, inspections. Diagnostics: Troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs) for applicable systems. Repair: Step-by-step repair procedures for all major vehicle systems, component removal and installation. Overhaul: Detailed overhaul procedures for engine, transmission, and other major components. Specifications: Torque specifications, clearances, tolerances, fluid capacities, electrical values. Technical Depth Depth: Factory-level diagnostic and repair information, suitable for professional technicians and advanced DIYers. 📊 Manual Specifications File Format Digital Format: Web-based access via browser, compatible with PC, laptop, smartphone, tablet. Print Quality Print Option: Printable pages available through the platform. Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: G200Z (1.6L DOHC Non-Turbo) Displacement: 1.6 Liters (1588 cc) Configuration: Inline 4-cylinder Valvetrain: DOHC (Double Overhead Camshafts), 16 valves Performance Horsepower: Approximately 125-130 hp @ 6500 rpm (specific rating may vary slightly) Torque: Approximately 105-110 lb-ft @ 5000 rpm (specific rating may vary slightly) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline Cooling System Coolant Type: Ethylene Glycol based coolant (refer to manual for specific mix ratio and part number, e.g., ACDelco 10-4035 or equivalent) Lubrication Oil Type: API SG or higher, SAE 5W-30 or 10W-30 (refer to manual for specific viscosity and API service classification) Oil Capacity: Approximately 4.0 US quarts (3.8 liters) with filter change. Ignition System Ignition Type: Electronic Ignition with Distributor 🔧 Transmission Standard Transmission Type Std: 5-speed Manual Transmission Optional Transmission Type Opt: 4-speed Automatic Transmission Features Manual Fluid Spec: GL-4 Gear Oil (refer to manual for specific viscosity, e.g., SAE 75W-90 or 80W-90) Automatic Fluid Spec: Dexron II or equivalent (refer to manual for precise specification and part number) Clutch Type: Dry, single-plate diaphragm spring clutch. 📐 Dimensions Exterior Length: Approximately 162.2 inches (4120 mm) Width: Approximately 66.7 inches (1695 mm) Height: Approximately 50.4 inches (1280 mm) Wheelbase: Approximately 94.3 inches (2395 mm) Weights Curb Weight: Approximately 2300-2500 lbs (1043-1134 kg) depending on trim and transmission. 🛡️ Safety Features Ratings NHTSA Rating: No specific NHTSA ratings readily available for this model year and region. Consult manual for any manufacturer-specific safety data. Active Features Active Safety: Optional Anti-lock Braking System (ABS) on some trims, front disc brakes, rear drum brakes (or disc on higher trims). Passive Features Passive Safety: Seat belts, reinforced body structure, energy-absorbing steering column. Airbags were not standard or common for this era. 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM stereo with cassette player. Speaker configurations varied by trim level. Climate Control: Manual climate control with heater and ventilation. Air conditioning was an optional feature. Driver Assistance Driver Assistance Features: Minimal by modern standards. Primarily focused on the core driving dynamics and chassis tuning. Optional ABS was the primary advanced feature. Connectivity Connectivity Features: N/A - No factory connectivity features such as Bluetooth or USB were available. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles or 6 months (refer to manual for specific recommendation based on driving conditions). Air Filter Interval: Inspect every 15,000 miles, replace as needed (refer to manual). Spark Plug Interval: Approximately every 30,000 miles (refer to manual for type and specific interval). Timing Belt Interval: Critical item. Typically around 60,000 miles or 4-5 years. Consult manual for exact...