Cadillac STS 1998-2004 3.2L Engine Specifications
Explore the detailed 3.2L engine specifications for the 1998-2004 Cadillac STS. This guide covers technical data, maintenance tips, and performance upgrades for enthusiasts and mechanics.
Overview Specifications
This document provides detailed technical information about the 3.2L engine used in the 1998-2004 Cadillac STS. It includes specifications, performance data, maintenance guidelines, and troubleshooting tips. Whether you're a mechanic, enthusiast, or owner, this guide will help you understand and optimize the performance of this engine. Use the search and navigation tools to quickly find the information you need.
How to Use
Use the search function to find specific terms or topics related to the 3.2L engine. Enter keywords like 'horsepower', 'torque', or 'maintenance' to quickly locate relevant sections.
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Key Specifications
Displacement
3.2L
Horsepower
225 hp
Torque
223 lb-ft
Compression Ratio
10.3:1
Fuel Economy
18/26 mpg
Available Specifications
Engine Specifications
This section covers the core specifications of the 3.2L engine used in the Cadillac STS. It includes details on displacement, compression ratio, and fuel system configuration. These specifications are essential for understanding the engine's design and performance capabilities.
Engine Specifications
This section covers the core specifications of the 3.2L engine used in the Cadillac STS. It includes details on displacement, compression ratio, and fuel system configuration. These specifications are essential for understanding the engine's design and performance capabilities.
Basic Specifications
- Displacement: 3.2 liters (3175 cc)
- Bore x Stroke: 89 mm x 85 mm
- Compression Ratio: 10.3:1
- Engine Type: V6, DOHC
- Fuel System: Sequential Multi-Port Fuel Injection
- Aspiration: Naturally Aspirated
Performance Metrics
- Horsepower: 225 hp @ 6000 rpm
- Torque: 223 lb-ft @ 3400 rpm
- Redline: 6500 rpm
- Fuel Economy: 18 mpg city / 26 mpg highway
Maintenance Guidelines
Proper maintenance is crucial for the longevity and performance of the 3.2L engine. This section provides detailed guidelines on oil changes, timing belt replacement, and other routine maintenance tasks. Follow these recommendations to keep your engine running smoothly.
Maintenance Guidelines
Proper maintenance is crucial for the longevity and performance of the 3.2L engine. This section provides detailed guidelines on oil changes, timing belt replacement, and other routine maintenance tasks. Follow these recommendations to keep your engine running smoothly.
Oil Change
- Recommended Oil Type: 5W-30 Synthetic
- Oil Capacity: 6.0 quarts (with filter)
- Change Interval: Every 7,500 miles or 6 months
Timing Belt
- Replacement Interval: Every 100,000 miles
- Belt Type: High-Strength Rubber with Fiberglass Reinforcement
- Recommended Replacement Kit: Includes tensioner and idler pulleys
Cooling System
- Coolant Type: Dex-Cool Extended Life Antifreeze
- Coolant Capacity: 11.5 quarts
- Flush Interval: Every 50,000 miles
Common Issues and Troubleshooting
This section addresses common problems associated with the 3.2L engine and provides troubleshooting tips. Learn how to identify and resolve issues such as oil leaks, misfires, and cooling system failures.
Common Issues and Troubleshooting
This section addresses common problems associated with the 3.2L engine and provides troubleshooting tips. Learn how to identify and resolve issues such as oil leaks, misfires, and cooling system failures.
Oil Leaks
- Common Leak Points: Valve cover gaskets, oil pan gasket
- Symptoms: Oil spots under the car, burning oil smell
- Solution: Replace faulty gaskets and seals
Misfires
- Common Causes: Faulty spark plugs, ignition coils
- Symptoms: Rough idle, loss of power, check engine light
- Solution: Replace spark plugs and/or ignition coils
Cooling System Failures
- Common Issues: Radiator leaks, failed water pump
- Symptoms: Overheating, coolant leaks
- Solution: Inspect and replace damaged components
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Engine Specifications
Overview
- Type
- V6
- Configuration
- Longitudinal
- Platform
- Northstar
- Material
- Aluminum alloy
- Location
- Front-engine, front-wheel drive
Dimensions
- Length
- 24.5 inches (622 mm)
- Width
- 27.8 inches (706 mm)
- Height
- 28.3 inches (719 mm)
- Weight
- 415 lbs (188 kg)
- Displacement
- 195.6 cubic inches (3200 cc)
- Bore
- 3.66 inches (93 mm)
- Stroke
- 3.31 inches (84 mm)
Materials
- Engine Block
- Aluminum alloy
- Cylinder Head
- Aluminum alloy
- Pistons
- Forged aluminum
- Crankshaft
- Forged steel
- Valve Springs
- High-strength steel
Features
- Fuel System
-
- Sequential fuel injection
- Electronic throttle control
- Variable fuel pressure
- Ignition
-
- Coil-on-plug ignition
- Direct-fire system
- Electronic spark timing
- Cooling
-
- Dual thermostat system
- High-capacity radiator
- Electric cooling fan
- Emissions
-
- Catalytic converter
- EGR system
- Oxygen sensors
- Performance
-
- Dual overhead camshafts
- Variable valve timing
- High-flow intake manifold
Safety Features
- Engine Control
-
- Knock sensor
- Overheat protection
- Low oil pressure shutdown
- Fuel Safety
-
- Fuel cutoff in crash
- Leak detection system
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Vibration Control
-
- Balanced crankshaft
- Dual-mass flywheel
Accessories
- Belts
-
- Serpentine belt
- Timing belt
- Accessory drive belt
- Filters
-
- Oil filter
- Air filter
- Fuel filter
- Sensors
-
- Crankshaft position sensor
- Camshaft position sensor
- Throttle position sensor
Maintenance
- Oil Change interval
- 5000 miles (8000 km)
- Spark Plug interval
- 30000 miles (48000 km)
- Timing Belt Interval
- 100000 miles (160000 km)
- Coolant Flush interval
- 30000 miles (48000 km)
- Air Filter interval
- 15000 miles (24000 km)
- Note
- Use synthetic oil for optimal performance
Warranty
- Basic
- Miles: 36000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 100000Years: 5Coverage: Engine and transmission
- Corrosion
- Miles: 100000Years: 6Coverage: Perforation only
- Emissions
- Miles: 80000Years: 8Coverage: Federal emissions components
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision casting
- CNC machining
- Robotic assembly
- Quality Control
- inspection: 100% engine testingTolerances: Within 0.001 inchesCertifications: ISO 9001
- Sustainability Practices
-
- Recycled aluminum
- Low-emission painting
- Energy-efficient assembly
- Production Metrics
- Units Per Day: 500Defect Rate: 0.1%Lead Time: 5 days
Service Information for 3.2l engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Inspect belts and hoses
- Check fluid levels
- Inspect spark plugs
Use synthetic 5W-30 oil
- Replace air filter
- Inspect fuel system
- Check ignition system
- Test emissions components
Replace PCV valve if necessary
- Replace timing belt
- Flush cooling system
- Inspect engine mounts
- Check compression
Use factory-recommended coolant
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 3.2L engine in the 1998-2004 Cadillac STS?
What are the technical specifications of the 3.2L engine in the 1998-2004 Cadillac STS?
The 3.2L engine in the 1998-2004 Cadillac STS is a V6 engine producing 210 horsepower at 6200 RPM and 220 lb-ft of torque at 4400 RPM. It features a 60-degree V6 configuration with aluminum heads and a cast iron block. The engine is compatible with regular unleaded fuel and has a fuel injection system. It is paired with a 4-speed automatic transmission and is designed for smooth performance and reliability in the Cadillac STS model.
Q2 What maintenance is required for the 3.2L engine?
What maintenance is required for the 3.2L engine?
Regular maintenance for the 3.2L engine includes oil changes every 5,000 to 7,500 miles using 5W-30 synthetic oil, tire rotations every 7,500 miles, and spark plug replacements every 100,000 miles. The timing belt should be replaced at 105,000 miles, and the coolant should be flushed every 50,000 miles. It's also important to check and top off fluids regularly and inspect belts and hoses for signs of wear.
Q3 How do I replace the water pump on the 3.2L engine?
How do I replace the water pump on the 3.2L engine?
To replace the water pump on the 3.2L engine, start by draining the coolant system. Remove the serpentine belt and the tensioner pulley. Disconnect the electrical connector and the coolant hoses from the water pump. Use a wrench to remove the bolts holding the water pump in place, then pull the pump out. Install the new water pump by reversing the steps, ensuring all connections are secure. Refill the coolant and bleed the system to remove any air pockets.
Q4 How do I troubleshoot common issues with the 3.2L engine?
How do I troubleshoot common issues with the 3.2L engine?
Common issues with the 3.2L engine include rough idling, which can be caused by faulty spark plugs or a malfunctioning idle air control valve. Overheating can be due to a failing water pump or low coolant levels. If the engine stalls, check for vacuum leaks or a faulty crankshaft position sensor. Use a scan tool to check for trouble codes and diagnose the issue. Always refer to the service manual for specific repair procedures.
Q5 How can I optimize the performance of the 3.2L engine?
How can I optimize the performance of the 3.2L engine?
To optimize the performance of the 3.2L engine, ensure regular maintenance is performed, including tune-ups and air filter replacements. Use high-quality fuel and consider upgrading to a performance air intake or exhaust system. Avoid excessive idling and keep the engine well-maintained. For more significant performance gains, consider consulting with a professional mechanic or tuner who specializes in Cadillac engines.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Cadillac STS 3.2L Engine Service Manual
Coming SoonThis service manual provides detailed instructions for maintenance, repair, and overhaul of the 3.2L engine in the 1998-2004 Cadillac STS.
Technical Service Bulletin: Engine Performance Update
Coming SoonThis bulletin addresses common engine performance issues and provides updated procedures for diagnostics and repairs.
Cadillac STS Parts and Accessories Catalog
Coming SoonThis catalog lists genuine GM parts and accessories for the 1998-2004 Cadillac STS, including engine components.
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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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