Segment:
Full-size Luxury Sedan
Target Audience:
Consumers seeking a comfortable, spacious, and refined American luxury vehicle.
Key Competitors:
Cadillac DeVille, Chrysler New Yorker, Buick Park Avenue.
Luxury Appointments:
Premium interior materials, quiet ride, advanced features for its time.
Powertrain:
V8 engine providing smooth power delivery.
General Information:
Included
Technical Features And Description:
Included
Rigging Information:
Included
Troubleshooting:
Included
Electrical System:
Included
Estimated Pages:
Varies (Digital format allows for dynamic page count, but equivalent to comprehensive factory manual)
Type:
Service Repair Factory Manual
Compatibility:
All Versions of Windows & Mac
Reader Requirement:
Adobe PDF Reader
Engine Mechanical:
Detailed procedures for disassembly, inspection, repair, and reassembly of engine components.
Engine Management:
Coverage of ignition system, fuel injection, emissions control, and engine control module (ECM) diagnostics.
Transmission Automatic:
Maintenance, diagnostic, and repair procedures for the automatic transmission.
Drivetrain:
Information on driveshafts, axles, and differentials.
Suspension:
Front and rear suspension component diagnosis, repair, and alignment specifications.
Steering:
Power steering system, steering column, and wheel component service.
Brakes:
Hydraulic system, ABS (Anti-lock Braking System), disc brake and drum brake component service, and bleeding procedures.
Electrical System:
Comprehensive wiring diagrams, component testing, charging system, starting system, lighting, and accessory circuits.
HVAC:
Air conditioning and heating system diagnosis and repair, including refrigerant handling.
Body And Frame:
Exterior and interior trim, doors, glass, and structural component information.
Restraint Systems:
Airbag system diagnosis and service procedures.
Scheduled Maintenance:
Detailed maintenance schedules for various mileage and time intervals.
Diagnostic Procedures:
Step-by-step troubleshooting guides for common and uncommon problems.
Component Removal And Installation:
Instructions for removing and installing virtually all vehicle components.
Rebuilding Procedures:
Comprehensive instructions for rebuilding major components like engines and transmissions.
Specifications And Tolerances:
Tight tolerances and torque specifications for accurate assembly.
Wiring Diagrams:
Detailed electrical schematics for all circuits.
Depth:
Comprehensive factory-level repair and maintenance information, suitable for professional technicians and advanced DIY enthusiasts.
Engine Code:
4.6L V8 (Northstar)
Displacement:
4.6 Liters (281 cubic inches)
Configuration:
DOHC 32-valve V8
Horsepower:
275 hp @ 5750 rpm (approximate)
Torque:
292 lb-ft @ 4750 rpm (approximate)
Fuel Delivery:
Sequential Electronic Fuel Injection (SEFI)
Fuel Type:
Unleaded Gasoline
Ignition System:
Distributorless Ignition System (DIS)
NHTSA Front Impact Driver:
4 Stars (1998 Model Year)
NHTSA Front Impact Passenger:
4 Stars (1998 Model Year)
ABS:
Standard Anti-lock Braking System (ABS)
Airbags:
Driver and front passenger airbags
Seatbelts:
Front and rear seatbelts with pretensioners
Audio System:
Factory premium audio system with cassette and CD player (optional).
Climate Control:
Automatic climate control with digital display.
Cruise Control:
Standard electronic cruise control.
Memory Seats:
Optional programmable memory seat functions.
Phone Integration:
Early factory-installed cellular phone options may have been available.
Oil Change Interval:
Every 5,000-7,500 miles or 6 months, whichever comes first (refer to manual for specific oil type and capacity).
Air Filter Replacement:
Every 15,000-30,000 miles or as needed based on driving conditions.
Spark Plug Replacement:
Refer to manual, typically around 100,000 miles for Northstar V8 Platinum-tipped plugs.
Engine Oil Type:
SAE 5W-30 (Synthetic Blend or Full Synthetic recommended for Northstar engine)
Engine Oil Capacity:
Approximately 5.5 quarts (5.2 Liters) with filter change.
Coolant Type:
Dex-Cool (Orange, 50/50 mix with distilled water)
Transmission Fluid Type:
Dexron-III (or equivalent)
Northstar Engine Head Gaskets:
While the 1998 model is less prone than earlier Northstars, head gasket leaks can still be a concern. Manual details inspection and repair.
Intake Manifold Gaskets:
Leaking intake manifold gaskets can cause vacuum leaks and performance issues. Manual provides diagnostic and replacement procedures.
Electronic Component Failures:
As with many vehicles of this era, various electronic control modules and sensors can fail. Manual's electrical section is critical.
