Pontiac Pontiac Montana 2005-2006 3.9L V6 Engine Specifications
Explore the detailed 3.9L V6 engine specifications for the 2005-2006 Pontiac Montana. This guide covers horsepower, torque, fuel system, and more, providing essential information for maintenance, repairs, and performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the 3.9L V6 engine used in the 2005-2006 Pontiac Montana. 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, including engine performance, dimensions, fuel system, and key specifications. Use the search and navigation instructions to quickly find the information you need.
How to Use
To search for specific terms or phrases, use the search bar at the top of the document. Enter keywords related to the information you need, such as 'horsepower' or 'torque,' and the relevant sections will be highlighted.
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Key Specifications
Horsepower
240 hp
Torque
240 lb-ft
Displacement
3.9L
Fuel Economy
20 MPG
Weight
380 lbs
Available Specifications
Engine Performance
This section covers the performance characteristics of the 3.9L V6 engine, including horsepower, torque, and fuel efficiency. It also includes details about the engine's power delivery and how it enhances the driving experience of the Pontiac Montana.
Engine Performance
This section covers the performance characteristics of the 3.9L V6 engine, including horsepower, torque, and fuel efficiency. It also includes details about the engine's power delivery and how it enhances the driving experience of the Pontiac Montana.
Horsepower and Torque
- Horsepower: 240 hp @ 6000 rpm
- Torque: 240 lb-ft @ 2000 rpm
- Power-to-weight ratio: 15.2 lb/hp
- Redline: 6200 rpm
Fuel Efficiency
- City MPG: 17
- Highway MPG: 24
- Combined MPG: 20
- Fuel tank capacity: 20.0 gallons
Engine Dimensions
This section provides the physical dimensions and weight of the 3.9L V6 engine, including its length, width, height, and displacement. These details are essential for understanding the engine's fit and compatibility.
Engine Dimensions
This section provides the physical dimensions and weight of the 3.9L V6 engine, including its length, width, height, and displacement. These details are essential for understanding the engine's fit and compatibility.
Physical Measurements
- Displacement: 3.9 liters (238 cubic inches)
- Bore x Stroke: 3.66 in x 3.31 in
- Length: 28.5 inches
- Width: 24.8 inches
- Height: 27.6 inches
- Weight: 380 lbs
Fuel System
This section details the fuel system components and specifications of the 3.9L V6 engine, including the fuel delivery method, injector type, and recommended fuel grade. It also covers maintenance tips for optimal performance.
Fuel System
This section details the fuel system components and specifications of the 3.9L V6 engine, including the fuel delivery method, injector type, and recommended fuel grade. It also covers maintenance tips for optimal performance.
Fuel Delivery and Injectors
- Fuel delivery: Sequential multi-port fuel injection
- Injector type: Electronic
- Recommended fuel: Regular unleaded
- Fuel pressure: 55 psi
Maintenance Tips
- Replace fuel filter every 30,000 miles
- Use fuel injector cleaner every 15,000 miles
- Check fuel lines for leaks annually
- Monitor fuel economy for performance issues
Search Specifications
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Engine Specifications
Overview
- Type
- Gasoline V6
- Configuration
- 60-degree V6
- Platform
- GM High Value Engine
- Material
- Aluminum block and heads
- Location
- Front, transverse
Dimensions
- Length
- 25.6 in (650 mm)
- Width
- 27.2 in (691 mm)
- Height
- 28.7 in (729 mm)
- Displacement
- 237 cu in (3.9 L)
- Bore
- 3.94 in (100 mm)
- Stroke
- 3.39 in (86 mm)
- Weight
- 374 lbs (170 kg)
Materials
- Block
- Aluminum with cast iron liners
- Heads
- Aluminum
- Pistons
- Aluminum alloy
- Connecting Rods
- Forged steel
- Crankshaft
- Cast iron
Features
- Ignition
-
- Coil-on-plug ignition
- Distributorless system
- Electronic spark control
- Fuel System
-
- Sequential fuel injection
- Returnless fuel system
- Electronic throttle control
- Cooling
-
- Cross-flow aluminum radiator
- Electric cooling fan
- Thermostatically controlled
- Emissions
-
- EGR system
- Catalytic converter
- OBD-II compliance
- Performance
-
- Variable valve timing
- Dual overhead camshafts
- High-flow intake manifold
Safety Features
- Engine Protection
-
- Low oil pressure shutdown
- Overheat protection
- Knock sensor
- Emissions Control
-
- Evaporative emissions system
- Secondary air injection
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Vibration Control
-
- Balancer shafts
- Rubber-isolated accessories
Accessories
- Belts
-
- Serpentine belt
- Timing belt
- Accessory drive belt
- Pulleys
-
- Crankshaft pulley
- Water pump pulley
- Alternator pulley
- Sensors
-
- Crankshaft position sensor
- Camshaft position sensor
- Knock sensor
Maintenance
- Service interval
- Every 7,500 miles or 6 months
- Service Items
-
- Oil and filter change
- Spark plug replacement
- Air filter inspection
- Coolant flush
- Timing belt inspection
- Maintenance Notes
- Use synthetic 5W-30 oil for optimal 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: 50,000Years: 4Coverage: Federal emissions components
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% engine testingTolerances: Precision machining
- Sustainability Practices
-
- Recycled aluminum
- Low-emission coatings
- Energy-efficient manufacturing
- Production Metrics
- Units Per Year: 150,000Defect Rate: Less than 0.5%
Service Information for 3.9l v6 engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Inspect air filter
- Check coolant level
- Inspect serpentine belt
- Check engine for leaks
Use synthetic 5W-30 oil for optimal performance
- Replace spark plugs
- Inspect timing belt
- Check ignition system
- Inspect fuel system
- Test emissions system
Replace timing belt if signs of wear are present
- Replace timing belt
- Flush cooling system
- Replace water pump
- Inspect and clean fuel injectors
- Perform compression test
Timing belt replacement is critical to prevent engine damage
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 3.9L V6 engine compatible with other Pontiac models from 2005-2006?
Is the 3.9L V6 engine compatible with other Pontiac models from 2005-2006?
The 3.9L V6 engine is specifically designed for the 2005-2006 Pontiac Montana. While it shares some components with other GM models, direct compatibility is limited. Always verify with a certified technician or refer to the manufacturer’s specifications before attempting cross-model installations to avoid performance issues or damage.
Q2 What are the maintenance requirements for the 3.9L V6 engine?
What are the maintenance requirements for the 3.9L V6 engine?
Regular maintenance for the 3.9L V6 engine includes oil changes every 3,000-5,000 miles, air filter replacement every 15,000 miles, and spark plug inspection every 30,000 miles. Additionally, coolant should be flushed every 50,000 miles, and the timing belt should be replaced every 100,000 miles. Adhering to this schedule ensures optimal engine performance and longevity.
Q3 How do I replace the 3.9L V6 engine in a 2005-2006 Pontiac Montana?
How do I replace the 3.9L V6 engine in a 2005-2006 Pontiac Montana?
To replace the 3.9L V6 engine, first disconnect the battery and drain all fluids. Remove the engine mounts, exhaust system, and electrical connections. Use an engine hoist to lift and remove the old engine. Install the new engine by reversing the steps, ensuring all connections are secure. Torque bolts to manufacturer specifications and refill fluids. Test the engine before driving.
Q4 What should I do if my 3.9L V6 engine is overheating?
What should I do if my 3.9L V6 engine is overheating?
If your 3.9L V6 engine is overheating, first check the coolant level and top it off if necessary. Inspect for leaks in the cooling system and ensure the radiator fan is functioning. If the issue persists, check the thermostat, water pump, and radiator for blockages or malfunctions. Seek professional assistance if the problem continues to prevent engine damage.
Q5 How can I optimize the performance of my 3.9L V6 engine?
How can I optimize the performance of my 3.9L V6 engine?
To optimize performance, use high-quality synthetic oil and ensure regular maintenance. Upgrade the air intake and exhaust systems for better airflow. Consider tuning the engine control unit (ECU) for improved fuel efficiency and power. Regularly clean fuel injectors and replace worn-out components to maintain peak performance and reliability.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2005-2006 Pontiac Montana Service Manual
Coming SoonThis manual provides detailed instructions for servicing and repairing the 2005-2006 Pontiac Montana, including the 3.9L V6 engine. It covers maintenance schedules, troubleshooting, and technical specifications.
Technical Service Bulletin for 3.9L V6 Engine
Coming SoonThis bulletin addresses common issues and updates for the 3.9L V6 engine in the 2005-2006 Pontiac Montana, including recommended fixes and improvements.
Pontiac Montana Parts and Accessories Guide
Coming SoonThis guide lists all available parts and accessories for the 2005-2006 Pontiac Montana, including those compatible with the 3.9L V6 engine. It includes part numbers and descriptions.
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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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