Vehicle Segment:
Full-size luxury SUV
Target Audience:
Enthusiasts, DIY mechanics, professional repair shops maintaining classic Jeep vehicles
Competitors 1989:
Chevrolet Suburban, Ford Bronco, Range Rover, Toyota Land Cruiser
Vehicle Appeal:
Iconic styling, V8 engine, capable 4WD, spacious interior, luxury appointments for its era
Manual Value Proposition:
Provides essential information for preserving, maintaining, and repairing a classic SUV, reducing reliance on costly specialized services.
Engine Systems:
Engine mechanical, fuel injection, ignition, cooling, lubrication, exhaust
Transmission Systems:
Automatic transmission (e.g., AW4) overhaul, service, and troubleshooting
Drivetrain Systems:
Four-wheel drive system (e.g., Selec-Trac), transfer case, differentials, axles, driveshafts
Brake Systems:
Hydraulic brake system diagnosis, repair, front disc and rear drum brake service
Suspension Steering Systems:
Front and rear suspension components, steering linkage, power steering system
Electrical Systems:
Wiring diagrams, charging system, starting system, lighting, instrumentation, power windows, power locks
Body And Chassis:
Body panel removal/installation, interior trim, doors, tailgate, frame inspection and repair
HVAC Systems:
Heating, Ventilation, and Air Conditioning (HVAC) system diagnosis and repair
Maintenance Procedures:
Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, belt and hose inspection/replacement
Troubleshooting Procedures:
Systematic diagnosis and troubleshooting of common and uncommon faults
Repair Procedures:
Step-by-step instructions for component removal, installation, and repair
Diagnostic Procedures:
Detailed diagnostic charts, component testing, and specifications
Rebuilding Procedures:
Comprehensive procedures for rebuilding major components like engines and transmissions
Depth Of Coverage:
Professional-level, covering routine maintenance to complete engine and transmission overhauls
Diagrams Illustrations:
Hundreds of detailed photos, diagrams, and exploded views
Specifications Data:
Torque specifications, clearances, fluid capacities, electrical specifications, diagnostic values
Engine Type:
V8, Overhead Valve (OHV)
Engine Code:
360 (AMC 360 V8)
Displacement:
360 cubic inches (5.9 Liters)
Horsepower Estimate:
Approximately 140-150 hp (net)
Torque Estimate:
Approximately 275-285 lb-ft (net)
Fuel Delivery:
Fuel Injection (likely Renix TBI or similar)
Recommended Fuel:
Unleaded gasoline, Octane rating 87 minimum
Ignition Type:
Electronic ignition system
Transmission Type:
Automatic
Transmission Model:
AW4 (Advanced Automatic 4-speed)
Manual Transmission Availability:
Not typically offered or very rare for this model year Grand Wagoneer
Transmission Control:
Electronically controlled with 4 forward gears and overdrive
Transmission Fluid Type:
Dexron III (or equivalent ATF)
Wheelbase:
109 inches (2769 mm)
Length:
189.1 inches (4803 mm)
Width:
79.5 inches (2019 mm)
Height:
65.7 inches (1669 mm)
Curb Weight Estimate:
Approximately 4,400 - 4,600 lbs (2000 - 2087 kg)
Gross Vehicle Weight Rating Estimate:
Approximately 6,000 - 6,200 lbs (2721 - 2812 kg)
Audio System:
AM/FM stereo with cassette player, optional premium sound system.
Climate Control:
Manual or automatic climate control systems with air conditioning.
Cruise Control:
Standard feature on most Grand Wagoneer models.
Connectivity Features:
Limited by era; primarily focused on power accessories and basic comfort features.
Oil Change Interval:
Every 3,000 miles or 3 months, whichever comes first, using the correct oil viscosity and type.
Transmission Service Interval:
Check fluid every oil change, change fluid and filter every 30,000 miles or as per manual.
Coolant Flush Interval:
Every 30,000 miles or 2 years.
Engine Oil Type:
API SG, SAE 10W-30 or 10W-40 (check manual for specific conditions)
Engine Oil Capacity:
5 quarts (4.7 liters) with filter change.
Coolant Type:
Ethylene Glycol based antifreeze (green type), 50/50 mix with distilled water.
Power Steering Fluid:
Dexron III ATF or equivalent.
Common Reliability Concerns:
Carburetor/fuel injection issues (if applicable), aging electrical components, rust on body and frame, cooling system overhauls, transmission leaks, transfer case chain stretch.
Typical Repairs:
Water pump replacement, radiator hoses, brake component replacement, fuel pump, ignition components (cap, rotor, plugs, wires).
Jeep Legacy:
Founded in 1941, Jeep is renowned for its off-road capability and robust, go-anywhere vehicles.
Wagoneer Origins:
The original Wagoneer (SJ) was introduced in 1963, establishing the luxury 4x4 segment. The Grand Wagoneer represented the pinnacle of its luxury offerings.
1989 Updates:
While the SJ platform was aging, 1989 saw continued refinement and adherence to federal safety and emissions standards. The Grand Wagoneer was positioned as the premium offering within the Jeep lineup.
Production Era:
SJ platform produced from 1963 to 1991. Grand Wagoneer specifically from 1984 to 1991.
Ownership Changes:
Jeep changed ownership several times during this period, including Kaiser-Jeep, American Motors Corporation (AMC), and Chrysler Corporation.
