Cadillac DeVille 1994-1999 Fuel System Specifications
Explore the detailed fuel specifications for the 1994-1999 Cadillac DeVille, including fuel type, tank capacity, economy, and emissions standards. Essential for maintenance, troubleshooting, and upgrades.
Overview Specifications
This document provides detailed fuel specifications for the 1994-1999 Cadillac DeVille. It includes information on fuel types, fuel economy, fuel system components, and maintenance tips. Use this guide to understand the vehicle's fuel requirements and optimize its performance. The document is organized into sections for easy navigation and includes a quick reference table for key specifications.
How to Use
Use the search functionality to find specific fuel-related terms or specifications. Enter keywords like 'fuel economy' or 'fuel type' to quickly locate relevant information.
Navigate through the sections using the table of contents. Each section is divided into subsections with detailed points. Click on a section title to expand and view its contents.
Key Specifications
Fuel Type
Unleaded Gasoline (87 Octane)
City Mileage
15-17 MPG
Highway Mileage
23-25 MPG
Fuel Tank Capacity
18.5 Gallons
Fuel Filter Replacement
Every 30,000 Miles
Available Specifications
Fuel Types and Requirements
This section covers the types of fuel suitable for the 1994-1999 Cadillac DeVille, including octane ratings and ethanol content recommendations. It also discusses the importance of using the correct fuel type for optimal engine performance.
Fuel Types and Requirements
This section covers the types of fuel suitable for the 1994-1999 Cadillac DeVille, including octane ratings and ethanol content recommendations. It also discusses the importance of using the correct fuel type for optimal engine performance.
Recommended Fuel Type
- Use unleaded gasoline with an octane rating of 87 or higher
- Avoid using diesel or leaded gasoline
- Ethanol blends up to 10% (E10) are acceptable
- Higher octane fuel may improve performance in certain conditions
Fuel Additives
- Use fuel additives sparingly and only if recommended
- Avoid additives containing metal compounds
- Detergent additives can help maintain fuel injector cleanliness
- Follow manufacturer guidelines for additive usage
Fuel Economy
This section provides information on the fuel efficiency of the 1994-1999 Cadillac DeVille, including city and highway mileage estimates. Tips for improving fuel economy are also included.
Fuel Economy
This section provides information on the fuel efficiency of the 1994-1999 Cadillac DeVille, including city and highway mileage estimates. Tips for improving fuel economy are also included.
Mileage Estimates
- City mileage: Approximately 15-17 MPG
- Highway mileage: Approximately 23-25 MPG
- Combined mileage: Approximately 18-20 MPG
- Actual mileage may vary based on driving conditions
Improving Fuel Economy
- Maintain proper tire pressure
- Avoid excessive idling
- Use cruise control on highways
- Regularly service the engine and fuel system
Fuel System Components
This section details the key components of the Cadillac DeVille's fuel system, including the fuel pump, fuel injectors, and fuel filter. Maintenance and troubleshooting tips are also provided.
Fuel System Components
This section details the key components of the Cadillac DeVille's fuel system, including the fuel pump, fuel injectors, and fuel filter. Maintenance and troubleshooting tips are also provided.
Fuel Pump
- Electric fuel pump located inside the fuel tank
- Maintains consistent fuel pressure
- Replace if experiencing fuel delivery issues
- Check for wear and tear during routine maintenance
Fuel Injectors
- Electronic fuel injectors for precise fuel delivery
- Clean injectors regularly to prevent clogging
- Replace if experiencing misfires or poor performance
- Use fuel injector cleaner as part of maintenance
Fuel Filter
- Located along the fuel line
- Filters impurities from the fuel
- Replace every 30,000 miles or as recommended
- Check for blockages during routine maintenance
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Component Specifications
Overview
- Type
- Gasoline
- Configuration
- Multi-port fuel injection
- Platform
- Northstar V8 engine
- Material
- Aluminum alloy
- Location
- Fuel tank at rear, fuel lines running undercarriage
Dimensions
- Fuel Tank Capacity
- 18.5 gallons (70 liters)
- Fuel Line Diameter
- 0.3125 inches (8 mm)
- Fuel Pump Pressure
- 40-60 psi (276-414 kPa)
- Fuel Filter Length
- 6.3 inches (160 mm)
- Fuel injector Spacing
- 3.94 inches (100 mm)
- Fuel Rail Length
- 24.8 inches (630 mm)
- Fuel Tank Length
- 36.2 inches (920 mm)
Materials
- Fuel Tank
- High-density polyethylene
- Fuel Lines
- Nylon with fluorocarbon lining
- Fuel Pump
- Brushed steel with polymer housing
- Fuel injectors
- Stainless steel with teflon seals
- Fuel Rail
- Aluminum alloy
Features
- Fuel Delivery
-
- Electronic fuel injection
- Sequential fuel delivery
- Returnless fuel system
- Variable pressure fuel pump
- Monitoring Systems
-
- Fuel level sensor
- Fuel pressure sensor
- Evaporative emissions monitoring
- Fuel trim monitoring
- Safety
-
- Rollover valve
- Fuel cutoff in crash
- Vapor recovery system
- Impact-resistant fuel tank
- Performance
-
- Optimized fuel atomization
- Precision fuel metering
- Adaptive fuel mapping
- Cold start enrichment
- Maintenance
-
- Serviceable fuel filter
- Accessible fuel pump
- Self-diagnostic system
- Removable fuel rail
Safety Features
- Crash Protection
-
- Automatic fuel shutoff
- Reinforced fuel tank
- Breakaway fuel lines
- Fire Prevention
-
- Flame arrestor in filler neck
- Vapor recovery system
- Thermal protection for fuel lines
- Emissions Control
-
- Sealed fuel system
- Charcoal canister
- Leak detection system
Comfort Features
- Refueling
-
- Easy-access fuel door
- Automatic fuel nozzle shutoff
- Fuel level indicator
- Driving
-
- Smooth fuel delivery
- Quiet fuel pump operation
- Stable fuel pressure
- Maintenance
-
- Easy fuel filter replacement
- Clear fuel system diagnostics
- Accessible fuel pump
Accessories
- Fuel Additives
-
- Fuel injector cleaner
- Octane booster
- Fuel stabilizer
- Monitoring
-
- Fuel pressure gauge
- Fuel consumption monitor
- Leak detection kit
- Performance
-
- High-flow fuel pump
- Performance fuel injectors
- Upgraded fuel rail
Maintenance
- Service interval
- Every 30,000 miles or 2 years
- Service Items
-
- Replace fuel filter
- Inspect fuel lines
- Check fuel pressure
- Test fuel injectors
- Clean throttle body
- Maintenance Notes
- Use only premium unleaded fuel for optimal performance
Warranty
- Basic
- Miles: 36000Years: 3Coverage: Fuel pump and injectors
- Powertrain
- Miles: 60000Years: 5Coverage: Fuel delivery system components
- Corrosion
- Miles: 100000Years: 6Coverage: Fuel tank corrosion
- Emissions
- Miles: 80000Years: 8Coverage: Evaporative emissions system
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Injection molding for fuel tank
- CNC machining for fuel rail
- Precision assembly of fuel injectors
- Automated testing of fuel pump
- Quality Control
- Pressure Testing: All fuel system componentsLeak Testing: Complete fuel systemPerformance Testing: Fuel pump and injectors
- Sustainability Practices
-
- Recyclable fuel tank materials
- Low-emission manufacturing
- Energy-efficient production
- Production Metrics
- Units Per Day: 500Defect Rate: 0.1%Energy Usage: 500 kWh per unit
Service Information for fuel Service
Maintenance and service requirements specific to the fuel system
- Replace fuel filter
- Inspect fuel lines for leaks
- Check fuel pressure
- Test fuel injector operation
- Inspect fuel tank for damage
Use only OEM specified fuel filter for proper fit and function
- Replace fuel pump if necessary
- Clean fuel injectors
- Inspect fuel rail for leaks
- Check evaporative emissions system
- Test fuel pressure regulator
Special fuel pressure gauge required for testing
- Replace fuel pump assembly
- Replace all fuel lines
- Clean fuel tank
- Replace fuel pressure regulator
- Test complete fuel system
Fuel tank removal requires special equipment, professional service recommended
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the fuel system in a 1994-1999 Cadillac DeVille?
What are the technical specifications of the fuel system in a 1994-1999 Cadillac DeVille?
The 1994-1999 Cadillac DeVille features a fuel-injected engine with a sequential multi-port fuel injection system. The fuel tank capacity is approximately 18 gallons. The recommended fuel is regular unleaded gasoline with an octane rating of 87 or higher. The fuel system operates at a pressure of 40-50 PSI, and the fuel pump is located inside the fuel tank. Compatibility with alternative fuels like E85 is not recommended for these model years.
Q2 What are the maintenance requirements for the fuel system?
What are the maintenance requirements for the fuel system?
Regular maintenance for the fuel system includes replacing the fuel filter every 15,000 to 30,000 miles, inspecting the fuel lines and connections for leaks or damage, and cleaning the fuel injectors every 30,000 miles. It is also recommended to check the fuel cap for proper sealing and replace it if necessary. A fuel system cleaner should be added to the fuel tank every 12,000 miles to prevent deposits and maintain optimal performance.
Q3 How do I replace the fuel pump in my 1994-1999 Cadillac DeVille?
How do I replace the fuel pump in my 1994-1999 Cadillac DeVille?
To replace the fuel pump, start by relieving the fuel system pressure by disconnecting the battery and letting the engine stall. Remove the fuel tank skid plate and disconnect the electrical connector and fuel lines from the pump. Lower the fuel tank carefully and remove the old pump from the tank. Install the new pump, ensuring all connections are secure. Reinstall the fuel tank and reconnect all lines and connectors. Finally, turn the ignition to prime the fuel system and check for leaks.
Q4 How do I troubleshoot common fuel system issues?
How do I troubleshoot common fuel system issues?
If the engine is having trouble starting, check the fuel pump for proper operation by listening for the pump to activate when the ignition is turned on. If the pump is not working, check the fuse and relay. If the engine is running rough or misfiring, inspect the fuel injectors for dirt or blockages and clean or replace them as needed. If there is a fuel odor, inspect the fuel lines and connections for leaks. Use a scan tool to check for any trouble codes in the engine control module (ECM) for further diagnosis.
Q5 How can I optimize the performance of my fuel system?
How can I optimize the performance of my fuel system?
To optimize fuel system performance, ensure the fuel filter is clean or replaced regularly, and use high-quality fuel with the recommended octane rating. Avoid driving with a low fuel level to prevent debris from entering the fuel pump. Regularly clean the fuel injectors to maintain proper fuel flow and combustion efficiency. Avoid aggressive driving habits that can decrease fuel efficiency. Consider upgrading to a high-flow fuel pump or fuel injectors if you have modified the engine for higher performance.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1994-1999 Cadillac DeVille Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and technical specifications for the Cadillac DeVille fuel system.
Fuel System Technical Bulletin
Coming SoonOfficial technical bulletin detailing updates and service procedures for the fuel system in 1994-1999 Cadillac DeVille models.
Cadillac DeVille Parts Catalog
Coming SoonDetailed parts guide listing components for the fuel system, including part numbers and compatibility information.
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