Buick Terraza 2005-2007 3.9L Engine Specifications
Explore detailed specifications for the 3.9L engine in the 2005-2007 Buick Terraza, including horsepower, torque, maintenance tips, and service intervals. Perfect for owners and mechanics.
Overview Specifications
This document provides detailed specifications and technical information about the 3.9L engine used in the 2005-2007 Buick Terraza. It is designed to assist owners, mechanics, and enthusiasts in understanding the engine's features, performance, and maintenance requirements. The content is organized into sections for easy navigation, with subsections breaking down specific aspects of the engine. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search function to find specific terms or phrases within the document. Enter keywords related to the 3.9L engine, such as 'horsepower' or 'fuel system,' to locate relevant sections quickly.
Navigate through the document using the section titles and subsections. Each major section covers a different aspect of the engine, and subsections provide detailed information on specific topics. Use the table of contents or scroll through the sections to find the information you need.
Key Specifications
Displacement
3.9L
Horsepower
240 hp
Torque
240 lb-ft
Fuel Economy (Combined)
18 mpg
Cylinder Configuration
V6
Available Specifications
Engine Performance
This section covers the performance characteristics of the 3.9L engine, including horsepower, torque, and fuel efficiency. It also discusses the engine's power delivery and how it contributes to the overall driving experience of the Buick Terraza.
Engine Performance
This section covers the performance characteristics of the 3.9L engine, including horsepower, torque, and fuel efficiency. It also discusses the engine's power delivery and how it contributes to the overall driving experience of the Buick Terraza.
Horsepower and Torque
- Horsepower: 240 hp @ 6000 rpm
- Torque: 240 lb-ft @ 2800 rpm
- Power delivery is smooth and consistent
- Engine optimized for mid-range power
Fuel Efficiency
- City fuel economy: 15 mpg
- Highway fuel economy: 22 mpg
- Combined fuel economy: 18 mpg
- Designed for balanced performance and efficiency
Engine Design
This section delves into the design and construction of the 3.9L engine, including its displacement, cylinder configuration, and material composition. It also highlights key design features that enhance durability and performance.
Engine Design
This section delves into the design and construction of the 3.9L engine, including its displacement, cylinder configuration, and material composition. It also highlights key design features that enhance durability and performance.
Displacement and Configuration
- Displacement: 3.9 liters (3900 cc)
- V6 cylinder configuration
- Overhead valve (OHV) design
- Aluminum cylinder heads
Material and Construction
- Cast iron engine block
- Forged steel crankshaft
- Hydraulic roller lifters
- Reinforced timing chain
Engine Maintenance
This section provides guidance on maintaining the 3.9L engine, including recommended service intervals, common maintenance tasks, and tips for ensuring long-term reliability.
Engine Maintenance
This section provides guidance on maintaining the 3.9L engine, including recommended service intervals, common maintenance tasks, and tips for ensuring long-term reliability.
Service Intervals
- Oil change: Every 3,000 to 5,000 miles
- Spark plug replacement: Every 30,000 miles
- Timing chain inspection: Every 60,000 miles
- Coolant flush: Every 50,000 miles
Common Maintenance Tasks
- Regularly check and replace air filters
- Monitor and maintain proper oil levels
- Inspect and replace worn belts and hoses
- Ensure proper coolant levels and mixture
Search Specifications
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Engine Specifications
Overview
- Type
- V6
- Configuration
- 60-degree V6
- Displacement
- 3.9 liters
- Fuel Type
- Gasoline
- Location
- Front, transverse
Dimensions
- Length
- 24.8 inches (630 mm)
- Width
- 28.3 inches (719 mm)
- Height
- 27.6 inches (701 mm)
- Weight
- 380 lbs (172 kg)
- Bore
- 3.7 inches (94 mm)
- Stroke
- 3.3 inches (84 mm)
- Compression Ratio
- 9.8:1
Materials
- Block
- Cast iron
- Cylinder Head
- Aluminum
- Pistons
- Aluminum alloy
- Crankshaft
- Forged steel
- Valve Cover
- Plastic composite
Features
- Fuel System
-
- Sequential fuel injection
- Electronic throttle control
- Returnless fuel system
- Ignition System
-
- Coil-on-plug ignition
- Electronic spark timing
- Knock sensor control
- Cooling System
-
- Electric cooling fan
- Pressurized coolant system
- Thermostatically controlled
- Emissions
-
- EGR system
- Catalytic converter
- OBD-II compliance
- Performance
-
- Variable valve timing
- Dual overhead camshafts
- Hydraulic lifters
Safety Features
- Engine Management
-
- Fail-safe cooling mode
- Over-rev protection
- Low oil pressure warning
- Fire Prevention
-
- Fuel shutoff in crash
- Heat shields
- Flame arrestor
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Tuned intake system
- Vibration Control
-
- Balancer shafts
- Isolated fuel rail
- Damped crankshaft pulley
Accessories
- Belt Driven
-
- Alternator
- Power steering pump
- Air conditioning compressor
- Electrical
-
- Starter motor
- Ignition coils
- Fuel injectors
- Cooling
-
- Water pump
- Radiator
- Coolant reservoir
Maintenance
- Service interval
- Every 7,500 miles or 6 months
- Service Items
-
- Oil and filter change
- Spark plug replacement
- Air filter inspection
- Coolant level check
- Belt tension inspection
- Maintenance Notes
- Use synthetic 5W-30 oil for best performance
Warranty
- Bumper To Bumper
- Miles: 36,000Years: 3Coverage: Comprehensive
- Powertrain
- Miles: 60,000Years: 5Coverage: Engine and transmission
- Corrosion
- Miles: 100,000Years: 6Coverage: Perforation only
- Emissions
- Miles: 80,000Years: 8Coverage: Federal emissions components
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection Points: 15Testing Procedures: Leak test, Dyno test, Cold start test
- Sustainability Practices
-
- Recycled materials
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Day: 500Defect Rate: 0.5%Production Years: 2005-2007
Service Information for 3.9l engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Inspect air filter
- Check coolant level
- Inspect belts and hoses
- Tire rotation
Use synthetic oil for extended life
- Replace air filter
- Inspect spark plugs
- Check brake system
- Inspect suspension components
- Test battery
Inspect for any leaks or unusual noises
- Replace spark plugs
- Flush coolant system
- Inspect timing chain
- Replace accessory belts
- Test fuel system
Consider professional inspection for major components
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 3.9L engine in the 2005-2007 Buick Terraza?
What are the technical specifications of the 3.9L engine in the 2005-2007 Buick Terraza?
The 3.9L engine in the 2005-2007 Buick Terraza is a V6 engine producing 240 horsepower at 6,000 rpm and 240 lb-ft of torque at 4,400 rpm. It features sequential fuel injection, a cast aluminum block, and a cast aluminum cylinder head. The engine is paired with a 4-speed automatic transmission and is compatible with regular unleaded fuel. It meets emissions standards for its model years and is designed for reliable performance in minivan applications.
Q2 What are the recommended maintenance requirements for the 3.9L engine?
What are the recommended maintenance requirements for the 3.9L engine?
Regular maintenance for the 3.9L engine includes oil changes every 5,000-7,500 miles using 5W-30 synthetic oil. The coolant should be replaced every 50,000 miles, and the timing belt should be inspected at 60,000 miles and replaced by 105,000 miles. Spark plugs should be replaced every 100,000 miles, and the air filter should be changed every 15,000-30,000 miles. Proper maintenance ensures optimal performance and longevity of the engine.
Q3 How do I replace the timing belt on the 3.9L engine?
How do I replace the timing belt on the 3.9L engine?
To replace the timing belt, start by disconnecting the battery and raising the vehicle. Remove the serpentine belt, then the water pump pulley, and the timing belt cover. Mark the timing belt alignment marks and remove the belt. Install the new belt, ensuring proper tension and alignment. Reassemble the components in reverse order. It is recommended to use specialized tools and consult a service manual for precise instructions.
Q4 How can I troubleshoot common issues with the 3.9L engine?
How can I troubleshoot common issues with the 3.9L engine?
Common issues with the 3.9L engine include misfires, low coolant levels, and timing belt wear. Check the dashboard for warning lights and refer to the OBD-II codes. Inspect the coolant level and hoses for leaks. Listen for unusual noises from the engine, which may indicate timing belt or pulley issues. Consult a mechanic if problems persist, as internal engine damage can occur if issues are not addressed promptly.
Q5 How can I optimize the performance of the 3.9L engine?
How can I optimize the performance of the 3.9L engine?
Optimize performance by ensuring proper maintenance, including regular tune-ups and air filter replacements. Use high-quality fuel and keep the engine coolant system clean. Consider upgrading the air intake system for improved airflow and installing a performance exhaust system. Regularly check and maintain proper tire pressure to reduce engine load. Avoid extreme driving conditions and ensure the vehicle is properly loaded within weight limits.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2005-2007 Buick Terraza Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and technical specifications for the 3.9L engine and related systems.
Technical Bulletin: Timing Belt Replacement
Coming SoonDetailed instructions and guidelines for timing belt replacement on the 3.9L engine.
Parts Catalog for 2005-2007 Buick Terraza
Coming SoonComplete listing of genuine parts and accessories for the 3.9L engine and related components.
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We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
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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