Buick LeSabre 1992-1999 3.8L Engine Specifications
Discover detailed technical specifications for the 3.8L V6 engine in the 1992-1999 Buick LeSabre. This guide covers performance metrics, maintenance tips, and compatibility information, making it an essential resource for owners and technicians.
Overview Specifications
This document provides detailed specifications and technical information about the 3.8L engine used in the 1992-1999 Buick LeSabre. It is designed to assist enthusiasts, mechanics, and owners in understanding the engine's features, performance, and maintenance requirements. The document is structured into sections for easy navigation, with subsections offering in-depth details on various aspects of the engine.
How to Use
Use the search function to quickly locate specific terms or topics within the document. Enter keywords related to the engine's specifications, performance, or maintenance for precise results.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is clearly labeled and contains subsections with detailed information for easy reference.
Key Specifications
Displacement
3.8L
Horsepower
170 hp
Torque
225 lb-ft
Fuel Efficiency
18/28 mpg
Compression Ratio
9.0:1
Available Specifications
Engine Specifications
This section covers the core specifications of the 3.8L engine, including its design, displacement, and key performance metrics. It provides a comprehensive overview of the engine's technical details.
Engine Specifications
This section covers the core specifications of the 3.8L engine, including its design, displacement, and key performance metrics. It provides a comprehensive overview of the engine's technical details.
General Specifications
- Displacement: 3.8 liters (231 cubic inches)
- Engine Type: V6
- Aspiration: Naturally aspirated
- Fuel System: Sequential fuel injection
- Compression Ratio: 9.0:1
- Bore x Stroke: 3.80 in x 3.40 in
Performance Metrics
- Horsepower: 170 hp @ 4800 rpm
- Torque: 225 lb-ft @ 3200 rpm
- Redline: 5500 rpm
- Fuel Efficiency: 18 city / 28 highway mpg
Engine Design
This section delves into the design features of the 3.8L engine, including its construction, materials, and unique engineering elements. It highlights the engine's reliability and durability.
Engine Design
This section delves into the design features of the 3.8L engine, including its construction, materials, and unique engineering elements. It highlights the engine's reliability and durability.
Construction and Materials
- Block Material: Cast iron
- Cylinder Head Material: Aluminum
- Valvetrain: Overhead valve (OHV)
- Camshaft: Hydraulic roller
- Valves per Cylinder: 2
Unique Features
- Balancer shaft for smooth operation
- Sequential fuel injection for improved efficiency
- Electronic ignition system for reliable performance
- Thermostatically controlled cooling system
Maintenance and Care
This section provides guidance on maintaining the 3.8L engine to ensure optimal performance and longevity. It includes recommended service intervals and common maintenance tasks.
Maintenance and Care
This section provides guidance on maintaining the 3.8L engine to ensure optimal performance and longevity. It includes recommended service intervals and common maintenance tasks.
Routine Maintenance
- Oil Change Interval: Every 3,000 miles
- Spark Plug Replacement: Every 30,000 miles
- Air Filter Replacement: Every 15,000 miles
- Coolant Flush: Every 50,000 miles
Common Issues and Solutions
- Intake manifold gasket leaks: Replace with updated gasket
- Ignition module failure: Inspect and replace as needed
- Fuel injector clogging: Clean or replace injectors
- Thermostat failure: Replace thermostat
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Engine Specifications
Overview
- Type
- V6
- Configuration
- Naturally Aspirated
- Platform
- GM 3800 Series II
- Material
- Cast Iron Block, Aluminum Heads
- Location
- Front Longitudinal
Dimensions
- Displacement
- 3.8 liters (231 cubic inches)
- Bore
- 3.80 inches (96.5 mm)
- Stroke
- 3.40 inches (86.4 mm)
- Height
- 29.5 inches (749 mm)
- Width
- 25.2 inches (640 mm)
- Length
- 27.6 inches (701 mm)
- Weight
- 410 lbs (186 kg)
Materials
- Engine Block
- Cast Iron
- Cylinder Head
- Aluminum
- Pistons
- Aluminum Alloy
- Crankshaft
- Forged Steel
- Valves
- Stainless Steel
Features
- Ignition System
-
- Distributorless Ignition
- Coil Pack
- Electronic Spark Control
- Fuel System
-
- Sequential Fuel Injection
- Returnless Fuel System
- Electronic Throttle Control
- Cooling System
-
- Electric Cooling Fan
- Crossflow Radiator
- Thermostatically Controlled
- Exhaust System
-
- Dual Exhaust
- Catalytic Converter
- Stainless Steel Muffler
- Engine Management
-
- OBD-II Compliance
- Powertrain Control Module
- Adaptive Learning
Safety Features
- Engine Protection
-
- Low Oil Pressure Shutdown
- Overheat Protection
- Knock Sensor
- Emissions Control
-
- Catalytic Converter
- EGR Valve
- Evaporative Emission Control
Comfort Features
- Noise Reduction
-
- Hydraulic Engine Mounts
- Acoustic Engine Cover
- Balanced Rotating Assembly
- Vibration Reduction
-
- Counterbalanced Crankshaft
- Dual Mass Flywheel
- Harmonic Balancer
Accessories
- Electrical System
-
- 100 Amp Alternator
- Maintenance-Free Battery
- Electronic Voltage Regulator
- Air Conditioning
-
- R134a Refrigerant
- Variable Displacement Compressor
- Dual Zone Climate Control
- Power Steering
-
- Hydraulic Power Steering
- Variable Assist
- Rack and Pinion
Maintenance
- Service interval
- Every 3,000 miles or 3 months
- Service Items
-
- Oil Change
- Oil Filter Replacement
- Air Filter Check
- Spark Plug Inspection
- Coolant Level Check
- Maintenance Notes
- Use only recommended fluids and filters for optimal performance.
Warranty
- Basic Warranty
- Miles: 36,000Years: 3Coverage: Bumper to Bumper
- Powertrain Warranty
- Miles: 60,000Years: 5Coverage: Engine, Transmission, Drivetrain
- Corrosion Warranty
- Miles: 100,000Years: 6Coverage: Perforation Only
- Emissions Warranty
- Miles: 50,000Years: 5Coverage: Federal Emissions Components
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% Engine TestingTolerances: Within 0.001 inchesCertifications: ISO 9001
- Sustainability Practices
-
- Recycled Materials
- Waste Reduction
- Energy Efficiency
- Production Metrics
- Units Per Year: 500,000Production Sites: 3Lead Time: 2 weeks
Service Information for 3.8l engine Service
Maintenance and service requirements specific to this component
- Change engine oil and filter
- Inspect air filter
- Check coolant level
- Inspect spark plugs
- Check belts and hoses
Use only manufacturer-recommended oil and filter.
- Replace air filter
- Inspect fuel system
- Check ignition system
- Inspect exhaust system
- Test battery and charging system
Inspect for any leaks or unusual noises.
- Replace spark plugs
- Replace coolant
- Inspect and replace timing belt if needed
- Check engine mounts
- Perform compression test
Critical to replace timing belt to prevent engine damage.
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 3.8L engine in the 1992-1999 Buick LeSabre?
What are the technical specifications of the 3.8L engine in the 1992-1999 Buick LeSabre?
The 3.8L engine is a naturally aspirated V6 producing 170 horsepower at 5,200 RPM and 220 lb-ft of torque at 2,000 RPM. It features a cast-iron block with aluminum cylinder heads, a multi-point fuel injection system, and a timing chain. The engine is compatible with regular unleaded gasoline and has a fuel tank capacity of approximately 17.7 gallons. It was paired with a 4-speed automatic transmission and is known for its reliability and moderate fuel efficiency.
Q2 What are the recommended maintenance requirements for the 3.8L engine?
What are the recommended maintenance requirements for the 3.8L engine?
Regular maintenance includes oil changes every 5,000 miles using 5W-30 synthetic oil, spark plug replacement every 30,000 miles, coolant flush every 50,000 miles, and timing belt replacement at 90,000 miles. Additionally, inspect belts and hoses every 15,000 miles and replace them as needed. Follow the manufacturer's recommended schedule for optimal performance and longevity.
Q3 How do I install or replace the 3.8L engine in my 1992-1999 Buick LeSabre?
How do I install or replace the 3.8L engine in my 1992-1999 Buick LeSabre?
To replace the engine, begin by disconnecting the battery and draining fluids. Remove the hood, radiator, cooling fan, and accessories. Disconnect electrical connectors and hoses, then remove the transmission and engine mounts. Use an engine hoist to lift and remove the old engine. Install the new engine, ensuring all connections are secure. Reattach components in reverse order, refill fluids, and reconnect the battery. Consult a service manual for detailed steps and torque specifications.
Q4 How do I troubleshoot common issues with the 3.8L engine?
How do I troubleshoot common issues with the 3.8L engine?
Common issues include rough idling (potential faulty Idle Air Control valve), low compression (possible head gasket issue), coolant leaks (often from the water pump), and poor acceleration (clogged fuel filter or faulty Mass Airflow Sensor). Use an OBD-I scanner to retrieve trouble codes for diagnostics. Inspect and test components as needed, consulting a repair manual for specific procedures.
Q5 How can I optimize the performance of the 3.8L engine?
How can I optimize the performance of the 3.8L engine?
Enhance performance by upgrading to a high-flow air filter and spark plugs, ensuring proper ignition timing, and maintaining a clean fuel system. Consider a performance tune with an aftermarket ECU chip and install a cat-back exhaust system for improved airflow. These modifications can increase horsepower and torque while maintaining reliability. Always follow installation guidelines and consult a mechanic for complex modifications.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1992-1999 Buick LeSabre Service Manual
Coming SoonComprehensive guide covering technical specifications, maintenance schedules, and repair procedures for the 3.8L engine.
Technical Bulletin: Engine Performance Updates
Coming SoonOfficial updates and diagnostic procedures for addressing common engine issues and improving performance.
Genuine GM Parts Catalog for 3.8L Engine
Coming SoonCatalog of OEM parts, including engine components, filters, and accessories for the 3.8L V6 engine.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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