Pontiac Pontiac Bonneville 1992-1999 3.8L V6 Engine Specifications
Explore the detailed technical specifications of the 3.8L V6 engine used in the 1992-1999 Pontiac Bonneville. This guide covers engine performance, maintenance, and upgrades, making it an essential resource for mechanics and enthusiasts.
Overview Specifications
This document provides detailed specifications and technical information about the 3.8L V6 engine used in the 1992-1999 Pontiac Bonneville. It is designed to assist enthusiasts, mechanics, and owners in understanding the engine's features, performance, and maintenance requirements. Use the search and navigation instructions to quickly locate specific information. The document is divided into major sections covering engine design, performance, fuel system, and maintenance tips.
How to Use
Use the search functionality by entering keywords related to the 3.8L V6 engine, such as 'horsepower', 'torque', or 'fuel system'. This will direct you to relevant sections and subsections.
Navigate through the document using the section titles and subsections. Click on a section to expand it and view detailed information about the 3.8L V6 engine.
Key Specifications
Displacement
3.8L (231 cu in)
Horsepower
170-205 hp
Torque
225-230 lb-ft
Compression Ratio
8.5:1
Fuel Tank Capacity
18.5 gallons
Available Specifications
Engine Design
This section covers the design and construction of the 3.8L V6 engine, including its block, cylinder heads, and internal components. Learn about the materials used and the engineering principles behind this reliable engine.
Engine Design
This section covers the design and construction of the 3.8L V6 engine, including its block, cylinder heads, and internal components. Learn about the materials used and the engineering principles behind this reliable engine.
Block and Cylinder Heads
- Cast iron engine block for durability
- Aluminum cylinder heads for reduced weight
- 90-degree V6 configuration
- Overhead valve (OHV) design
- Displacement of 3.8 liters (231 cubic inches)
Internal Components
- Forged steel crankshaft
- Pistons with low-friction coatings
- Hydraulic roller lifters
- Timing chain for precise valve operation
Performance
This section focuses on the performance characteristics of the 3.8L V6 engine, including horsepower, torque, and fuel efficiency. Discover how this engine delivers a balance of power and economy.
Performance
This section focuses on the performance characteristics of the 3.8L V6 engine, including horsepower, torque, and fuel efficiency. Discover how this engine delivers a balance of power and economy.
Power Output
- Horsepower: 170-205 hp (varies by model year)
- Torque: 225-230 lb-ft
- Redline: 5500 RPM
- Compression ratio: 8.5:1
Fuel Efficiency
- EPA-estimated 17-19 MPG city
- EPA-estimated 26-28 MPG highway
- Sequential fuel injection system
- Electronic engine control module
Fuel System
This section details the fuel delivery system of the 3.8L V6 engine, including the fuel injectors, pump, and related components. Understand how the engine efficiently manages fuel consumption.
Fuel System
This section details the fuel delivery system of the 3.8L V6 engine, including the fuel injectors, pump, and related components. Understand how the engine efficiently manages fuel consumption.
Fuel Injection
- Sequential multi-port fuel injection
- 12-hole fuel injectors for precise delivery
- Fuel pressure regulator
- Returnless fuel system
Fuel Pump and Filter
- Electric in-tank fuel pump
- High-pressure fuel pump
- Replaceable fuel filter
- Fuel tank capacity: 18.5 gallons
Maintenance Tips
This section provides practical advice for maintaining the 3.8L V6 engine, including recommended service intervals and common troubleshooting tips. Keep your engine running smoothly with these guidelines.
Maintenance Tips
This section provides practical advice for maintaining the 3.8L V6 engine, including recommended service intervals and common troubleshooting tips. Keep your engine running smoothly with these guidelines.
Service Intervals
- Oil change every 3,000-5,000 miles
- Replace spark plugs every 30,000 miles
- Inspect timing chain every 60,000 miles
- Check and replace fuel filter annually
Troubleshooting
- Common issue: Intake manifold gasket leaks
- Check for vacuum leaks if idle is rough
- Monitor coolant levels to prevent overheating
- Listen for timing chain noise as a wear indicator
Search Specifications
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Engine Specifications
Overview
- Type
- Naturally Aspirated V6
- Configuration
- 60-degree V6
- Platform
- GM 3800 Series II
- Material
- Cast Iron Block, Aluminum Heads
- Location
- Front Transverse
Dimensions
- Displacement
- 3.8 liters (231 cubic inches)
- Bore
- 3.80 inches (96.5 mm)
- Stroke
- 3.40 inches (86.4 mm)
- Compression Ratio
- 9.4:1
- Weight
- 410 lbs (186 kg)
- Length
- 28.5 inches (724 mm)
- Width
- 26.7 inches (678 mm)
- Height
- 27.3 inches (693 mm)
Materials
- Block
- Cast Iron
- Cylinder Heads
- Aluminum
- Pistons
- Aluminum Alloy
- Crankshaft
- Forged Steel
- Valves
- Stainless Steel
Features
- Fuel System
-
- Sequential Fuel Injection
- Returnless Fuel System
- Electronic Throttle Control
- Ignition
-
- Distributorless Ignition System
- Coil-on-Plug Design
- Knock Sensor
- Cooling
-
- Cross-Flow Aluminum Radiator
- Electric Cooling Fan
- Thermostatic Control
- Lubrication
-
- Full-Pressure Lubrication
- Oil Cooler
- Oil Life Monitoring System
- Emissions
-
- EGR System
- Catalytic Converter
- Oxygen Sensors
Safety Features
- Engine Protection
-
- Low Oil Pressure Warning
- Overheat Warning
- Engine Misfire Detection
- Emissions Control
-
- Onboard Diagnostics (OBD-II)
- Evaporative Emission Control
Comfort Features
- Vibration Control
-
- Hydraulic Engine Mounts
- Balanced Crankshaft
- Noise Reduction
-
- Acoustic Engine Covers
- Tuned Exhaust System
Accessories
- Belt Driven
-
- Serpentine Belt
- Alternator
- Power Steering Pump
- Engine Bay
-
- Air Intake System
- Battery
- Coolant Reservoir
- Electronic
-
- Engine Control Module
- Sensors
- Wiring Harness
Maintenance
- Service interval
- Every 7,500 miles or 12 months
- Service Items
-
- Oil and Filter Change
- Spark Plug Replacement
- Air Filter Replacement
- Coolant Flush
- Serpentine Belt Inspection
- Fuel System Cleaning
- Maintenance Notes
- Use only GM-approved fluids and filters for optimal performance.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-Bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Engine and Transmission
- Emissions
- Miles: 50,000Years: 2Coverage: Catalytic Converter, Sensors
- Corrosion
- Miles: 100,000Years: 6Coverage: Perforation Only
- Warranty Terms
- Warranty coverage is subject to terms and conditions outlined in the owner's manual.
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% Engine TestingTolerances: Precision Machined Components
- Sustainability Practices
-
- Recycled Materials
- Waste Reduction
- Energy Efficiency
- Production Metrics
- Units Per Day: 500Defect Rate: 0.05%
Service Information for 3.8l v6 engine Service
Maintenance and service requirements specific to this component
- Oil and Filter Change
- Inspect Serpentine Belt
- Check Fluid Levels
- Inspect Spark Plugs
- Test Battery
Use synthetic oil for extended intervals.
- Replace Air Filter
- Replace Fuel Filter
- Inspect Cooling System
- Check Ignition System
- Test Emissions System
Ensure all emissions components are functioning properly.
- Replace Timing Chain
- Replace Water Pump
- Flush Cooling System
- Replace Spark Plugs
- Inspect Exhaust System
Timing chain replacement requires specialized tools.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 3.8L V6 engine compatible with other Pontiac models from 1992-1999?
Is the 3.8L V6 engine compatible with other Pontiac models from 1992-1999?
The 3.8L V6 engine used in the 1992-1999 Pontiac Bonneville is primarily designed for this model. While it shares similarities with engines in other GM vehicles, such as the Buick LeSabre and Oldsmobile 88, direct compatibility is not guaranteed. Always verify engine codes, mounting points, and electrical connections before attempting installation in other models.
Q2 What are the maintenance requirements for the 3.8L V6 engine?
What are the maintenance requirements for the 3.8L V6 engine?
Regular maintenance for the 3.8L V6 engine includes oil changes every 3,000-5,000 miles, replacing the air filter every 15,000 miles, and inspecting spark plugs and ignition wires every 30,000 miles. Coolant should be flushed every 50,000 miles, and the timing belt should be replaced every 100,000 miles to prevent engine damage.
Q3 How do I replace the 3.8L V6 engine in a 1992-1999 Pontiac Bonneville?
How do I replace the 3.8L V6 engine in a 1992-1999 Pontiac Bonneville?
To replace the 3.8L V6 engine, first disconnect the battery and drain fluids. Remove the hood, exhaust manifold, and engine mounts. Disconnect electrical connectors and hoses, then use an engine hoist to lift the engine out. Install the new engine by reversing the process, ensuring all connections are secure. Refill fluids and test the engine before driving.
Q4 What should I do if my 3.8L V6 engine is overheating?
What should I do if my 3.8L V6 engine is overheating?
If the engine overheats, check the coolant level and top it off if necessary. Inspect the radiator for leaks or blockages and ensure the thermostat is functioning properly. If the problem persists, examine the water pump and cooling fan. Always address overheating immediately to prevent engine damage.
Q5 How can I optimize the performance of my 3.8L V6 engine?
How can I optimize the performance of my 3.8L V6 engine?
To optimize performance, use high-quality synthetic oil and premium fuel. Upgrade the air intake and exhaust systems for better airflow. Regularly clean the fuel injectors and ensure the ignition system is in good condition. Consider reprogramming the engine control module (ECM) for improved throttle response and fuel efficiency.
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 Pontiac Bonneville Service Manual
Coming SoonThis comprehensive manual provides detailed instructions for servicing and repairing the 3.8L V6 engine, including troubleshooting, maintenance, and replacement procedures.
Technical Service Bulletin: 3.8L V6 Engine Updates
Coming SoonThis bulletin outlines common issues and updates for the 3.8L V6 engine, including recalls, software updates, and recommended repairs.
Pontiac Bonneville Parts and Accessories Guide
Coming SoonThis guide lists OEM and aftermarket parts compatible with the 1992-1999 Pontiac Bonneville, including engine components, filters, and gaskets.
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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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