Positioning:
Targeted at DIY enthusiasts and professional technicians seeking official, reliable repair information for the 1999 Mercury Grand Marquis.
Comparison To Print:
Offers superior convenience, searchability, and accessibility compared to traditional printed manuals, with instant online access.
Licensing:
Officially licensed and derived from OE (Original Equipment) materials, ensuring accuracy and authenticity.
Access Duration:
Full year of access included, with options for renewal and discounts on extended access.
Developer:
RepairSurge (automotive software specialist)
Primary Coverage:
Full vehicle service, repair, diagnostics, and maintenance
Estimated Page Count:
Extensive, equivalent to several thousand printed pages of detailed information
Type:
Official Licensed Service and Repair Manual Software
Format:
Digital Software (Web-based, PC, laptop, smartphone, tablet compatible)
Powertrain:
Engine mechanical, fuel system, ignition system, exhaust system, cooling system, lubrication system
Drivetrain:
Automatic transmission (e.g., 4R70W), driveshaft, differential, axle shafts
Chassis:
Suspension (front and rear), steering system, brake system (front and rear), wheels and tires
Electrical:
Wiring diagrams, lighting, charging system, starting system, instruments and indicators, power windows/locks, climate control electricals
Body:
Body panels, doors, interior trim, glass, bumpers, frame and underbody components
HVAC:
Heating, Ventilation, and Air Conditioning system components and service
Maintenance:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement, tire rotation
Troubleshooting:
Diagnostic procedures for common and uncommon issues, DTC (Diagnostic Trouble Code) interpretation and resolution
Repair:
Detailed step-by-step repair procedures for all major vehicle systems, including engine rebuild, transmission overhaul, brake component replacement, suspension repair, and electrical system diagnosis
Installation:
Procedures for component replacement and installation
Depth:
Comprehensive, covering everything from basic maintenance to advanced diagnostics and complete component rebuilds; includes torque specifications, clearances, and specialized tool usage.
Engine Code:
4.6L SOHC V8 (e.g., Crown Victoria/Grand Marquis base engine)
Displacement:
4.6 Liters (281 cubic inches)
Configuration:
V8, Overhead Cam (SOHC)
Bore X Stroke:
3.55 in x 3.54 in (90.2 mm x 89.9 mm)
Compression Ratio:
Approximately 9.0:1 or 9.4:1 (depending on specific variant)
Horsepower:
Approximately 200-215 hp @ 4000-4500 rpm
Torque:
Approximately 275-290 lb-ft @ 2400-3000 rpm
Induction:
Sequential Electronic Fuel Injection (SEFI)
Fuel Type:
Unleaded gasoline, 87 octane recommended
Fuel Pump Pressure:
Approximately 30-45 PSI
Type:
4-speed Automatic Overdrive
Transmission Code:
4R70W (common designation)
Overdrive:
Yes (4th gear provides overdrive for fuel efficiency)
Transmission Fluid Type:
MERCON V (refer to manual for exact specifications and changes)
Transmission Fluid Capacity:
Approximately 12.4 quarts (11.7 liters) for complete refill, less for drain and fill.
Length:
Approximately 212 inches (5385 mm)
Width:
Approximately 78.6 inches (1996 mm)
Height:
Approximately 58.4 inches (1483 mm)
Wheelbase:
Approximately 114.4 inches (2906 mm)
Curb Weight:
Approximately 4100-4300 lbs (1860-1950 kg), varies by trim and options.
Gross Vehicle Weight Rating:
Typically around 5500 lbs (2495 kg)
NHTSA Frontal Impact:
Not explicitly rated by NHTSA for this specific model year in the same way as modern vehicles, but considered a robust body-on-frame construction.
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Traction control may be available as an option on some trims.
Airbags:
Driver and front passenger airbags
Seatbelts:
Three-point seatbelts for all occupants
Body Construction:
Body-on-frame construction, known for durability and rigidity.
Audio System:
Standard AM/FM stereo with cassette player and optional CD player. Upgraded systems may include premium speaker options.
Climate Control:
Manual or optional Automatic Climate Control (ACC) system.
Cruise Control:
Standard cruise control system.
Lighting:
Halogen headlights, manual aiming.
Oil Change Interval:
Recommended every 5,000 miles or 6 months, whichever comes first, under normal driving conditions. Consult manual for severe conditions.
Transmission Fluid Change:
Typically recommended every 50,000-100,000 miles or as per manual, depending on usage. Filter replacement often recommended at the same time.
Coolant Flush:
Every 50,000 miles or 3 years, using appropriate coolant type.
Engine Oil:
SAE 5W-30 (check owner's manual for exact specification, as temperature ranges can influence recommendation).
Coolant:
Ford-specified Yellow or Gold Organic Acid Technology (OAT) coolant, or a compatible alternative. Typically a 50/50 mix with distilled water.
Air Suspension:
Rear air suspension (if equipped) can be prone to leaks or compressor failure over time.
Intake Manifold Gaskets:
Plastic intake manifold gaskets on some 4.6L engines can degrade and leak coolant.
Coil On Plug Failures:
Coil-on-plug ignition systems can experience individual coil failures leading to misfires.
Rear Differential Pinion Seal:
Can develop leaks over time.
Mercury Legacy:
Mercury was Ford's mid-level brand, often offering a more luxurious or distinctive take on Ford platforms, emphasizing comfort and refinement.
Grand Marquis Lineage:
The Grand Marquis, along with its sibling the Crown Victoria, traces its lineage back to the Panther platform, originally designed as a robust, rear-wheel-drive full-size sedan suitable for police, taxi, and fleet use, as well as for private buyers seeking comfort and space.
Manufacturing Location:
Typically manufactured at Ford's assembly plants in North America (e.g., St. Thomas, Ontario, Canada; Chicago, Illinois, USA).
Production Period:
The Panther platform, including the Grand Marquis, was produced for many years, with the 1999 model being part of the second generation redesign (1998-2002).
Market Segment Popularity:
The Grand Marquis was consistently popular in segments valuing comfort, space, and a smooth ride, particularly among older demographics and fleet buyers.
Reliability Perception:
Generally perceived as a reliable vehicle with a robust powertrain, known for longevity when properly maintained.
