🏷️ Basic Information

Make:

Mercury

Model:

Grand Marquis

Year:

2004

Platform:

Panther Platform

👋 Introduction

Vehicle Segment:

Full-size, rear-wheel-drive sedan; traditionally a comfortable, spacious, and value-oriented American car.

Key Competitors:

Chevrolet Impala, Buick LeSabre, Chrysler 300M (and later the Chrysler 300), Ford Crown Victoria, Lincoln Town Car

Manual Value Proposition:

Empowers owners to perform their own maintenance and repairs, saving significant costs associated with dealership or independent shop labor. Provides detailed, illustrated instructions for all service and repair tasks.

Vehicle Strengths:

Robust body-on-frame construction, comfortable ride, spacious interior, strong V8 engine performance, durable powertrain.

📋 Manual Details

Coverage Scope:

All models and engine types for 2004 Mercury Grand Marquis

Estimated Page Count:

Highly comprehensive, likely exceeding 2000 pages based on typical OEM service manuals

Type:

Professional Service and Repair Shop Manual

Language:

English

Format:

PDF Digital Download

📖 Manual Coverage

Powertrain:

Engine, transmission, driveline, fuel system, cooling system, exhaust system

Chassis:

Suspension (front and rear), steering system, braking system (including ABS), wheels and tires

Body:

Exterior body panels, interior trim, doors, windows, glass, HVAC system, lighting, wipers

Electrical:

Complete electrical system, including wiring diagrams, battery, charging system, starting system, lighting, accessories, onboard diagnostics (OBD-II)

Routine Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, tire rotations, inspections

Troubleshooting:

Diagnostic procedures for common faults, symptom-based troubleshooting guides

Repair And Replacement:

Detailed step-by-step instructions for component removal, repair, and installation

Component Overhaul:

In-depth procedures for rebuilding major components like engines and transmissions

Electrical Diagnostics:

Wiring diagram interpretation, circuit testing, module diagnosis

Body And Paint:

Repair procedures for body panels, doors, hood, trunk, bumpers, and paint defect correction.

Interior Repair:

Procedures for removing and installing interior trim, seats, dashboard components, and headliner.

Diagnostic Tools:

Information on using OBD-II scanners, multimeters, and specialized diagnostic tools for fault finding.

Depth:

Professional-level, suitable for experienced DIY mechanics and professional technicians. Covers everything from basic maintenance to complex system diagnostics and repair.

Wiring Diagrams:

Detailed, comprehensive wiring diagrams covering all vehicle systems, essential for electrical troubleshooting.

Torque Specifications:

Precise torque specifications for all critical fasteners and components.

Component Tolerances:

Specifications for component clearances and tolerances required during rebuilding or repair.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text content within the PDF

Print Capability:

Printable pages for in-shop use

Binding Style:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Code:

4.6L V8 (Romeo/Windsor variants)

Engine Type:

SOHC (Single Overhead Cam) V8

Displacement:

4.6 liters (281 cubic inches)

Horsepower:

Approximately 224-239 hp depending on specific variant and year updates

Torque:

Approximately 272-282 lb-ft depending on specific variant and year updates

Fuel Delivery:

Sequential Electronic Fuel Injection (SEFI)

Fuel Type:

Unleaded gasoline (regular 87 octane recommended)

Oil Type:

SAE 5W-30 (API Service SG or higher)

Oil Capacity:

Approximately 5 quarts (4.7 liters) with filter change

Coolant Type:

Ford Premium Engine Coolant (VC-7B) or equivalent (typically a green ethylene glycol based coolant)

Coolant Capacity:

Approximately 14.5 quarts (13.7 liters)

🔧 Transmission

Transmission Type:

4-speed Automatic Transmission

Transmission Code:

4R70W

Transmission Fluid Type:

MERCON V Automatic Transmission Fluid (ATF)

Transmission Fluid Capacity:

Approximately 10.8 quarts (10.2 liters) for dry fill, 6.7 quarts (6.3 liters) for fluid change

📐 Dimensions

Wheelbase:

Approximately 114.4 inches (2906 mm)

Overall Length:

Approximately 212.4 inches (5395 mm)

Overall Width:

Approximately 78.1 inches (1984 mm)

Overall Height:

Approximately 57.7 inches (1466 mm)

Curb Weight:

Approximately 4,000 - 4,200 lbs (1814 - 1905 kg)

Gross Vehicle Weight Rating Gvwr:

Approximately 5,200 lbs (2359 kg)

🛡️ Safety Features

NHTSA Frontal Crash Test Driver:

Likely 4-star (as rated by NHTSA at the time, specific year data may vary)

NHTSA Frontal Crash Test Passenger:

Likely 4-star (as rated by NHTSA at the time, specific year data may vary)

Airbags:

Frontal airbags for driver and passenger, available side-impact airbags

Seatbelts:

Three-point front and rear seat belts

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Available Traction Assist System (TAS)

💡 Technology Features

Audio System:

AM/FM stereo with CD player, optional cassette player, and premium sound system options available.

Climate Control:

Manual or optional automatic climate control (dual-zone)

Cruise Control:

Standard electronic cruise control

Parking Assistance:

Rear parking assist sensors optional on some trims

🔧 Maintenance

Oil Change Interval:

Every 5,000-7,500 miles or 6 months, whichever comes first, using synthetic blend or synthetic oil. Consult owner's manual for exact recommendation.

Transmission Fluid Change Interval:

Every 30,000-60,000 miles, depending on driving conditions. Fluid condition is a key indicator.

Coolant Flush Interval:

Every 30,000-50,000 miles or 2-3 years.

Spark Plug Replacement:

Typically at 100,000 miles for the 4.6L V8 (though specific type of plug will dictate interval; original Motorcraft plugs were long-life)

Power Steering Fluid:

MERCON V ATF or Ford/Motorcraft Electronic Power Assist Steering Fluid (if applicable)

Brake Fluid:

DOT 3 or DOT 4 Motor Vehicle Brake Fluid

Cop Ignition Coils:

Coil-on-plug (COP) ignition systems can be prone to coil failure, leading to misfires. Replacement is usually straightforward.

Rear Air Suspension:

While not standard on all models, some equipped with optional rear air suspension can experience leaks or compressor failure.

Exhaust Manifold Leaks:

Cracked exhaust manifolds or broken studs can cause exhaust leaks and ticking noises.

Window Regulators:

Power window regulators can fail over time.

📚 Vehicle History

Brand Legacy:

Mercury was established in 1939 by Ford Motor Company to offer a mid-priced line of vehicles, bridging the gap between Ford and Lincoln. The Grand Marquis, particularly, carried on the tradition of comfortable, spacious, and durable full-size American sedans.

Generation History:

The 2004 model belongs to the third generation of the Grand Marquis (launched in 1998), which was a significant update to the Panther platform. Key updates in this generation included improved aerodynamics, a more modern interior, and enhanced safety features.

Manufacturing Location:

St. Thomas, Ontario, Canada

Production Years:

The Mercury Grand Marquis nameplate was used from 1983 to 2011, with its roots tracing back to the Mercury Marquis.

🏆 Awards & Recognition

Vehicle Awards:

While specific awards for the 2004 model year are not prominently documented, the Grand Marquis was consistently recognized for its value, comfort, and durability, often favored by fleet buyers and law enforcement for its robust platform.