Model:
Cherokee, Comanche, Wagoneer, Wrangler
Cherokee/Wagoneer (Xj):
Second Generation (1984-1996)
Comanche (Mj):
First Generation (1986-1992)
Wrangler (Yj):
First Generation (1986-1995)
Target Audience:
Jeep owners (Cherokee, Comanche, Wagoneer, Wrangler) seeking to perform their own maintenance and repairs, enthusiasts, independent repair shops
Value Proposition:
Empowers owners to save significant money on dealership service costs by enabling DIY repairs and maintenance, providing professional-grade information.
Advantage Over Competitors:
Official factory service manual content, digital format allows for on-demand printing of specific sections, durability of printouts, cost savings compared to dealership labor
Features:
Detailed diagrams, photos, step-by-step instructions, comprehensive system coverage, electrical troubleshooting diagrams, torque specifications
Scope:
All models and configurations for the 1988 model year
Estimated Pages:
Likely exceeds 1000 pages (typical for comprehensive FSMs of this era, though exact count not provided)
Type:
Factory Service Manual (FSM)
Format:
Digital (CD, downloadable .PDF)
Powertrain:
Engine, Fuel System, Cooling System, Exhaust System, Ignition System, Transmission, Transfer Case, Differential and Driveline
Chassis And Suspension:
Suspension, Steering, Brakes, Tires and Wheels, Frame and Bumpers
Electrical And Body:
Battery, Starting Systems, Charging System, Instrument Panel Systems, Audio Systems, Horn Systems, Vehicle Speed Control System, Turn Signal and Hazard Warning Systems, Wipers and Washer Systems, Lamps, Passive Restraint Systems, Electrically Heated Systems, Power Lock Systems, Power Window Systems, Power Mirror Systems, Chime/Buzzer Warning Systems, Overhead Console Systems, Wiring Diagrams, Body
Emission Control:
Emission Control System: Details on emissions components, diagnostic codes (if applicable for the era), and troubleshooting procedures related to emissions compliance.
Heating And Cooling:
Heating and Air Conditioning: Covers the HVAC system, including diagnosis and repair of the blower motor, heater core, A/C compressor, refrigerant system, and climate controls.
Instrument Panel:
Instrument Panel Systems: Covers gauges, warning lights, and the functionality of the dashboard components.
Body Hardware:
Body and Wheels: Includes specifications and procedures for wheels, tires, and basic body hardware adjustments.
Maintenance And Routine:
Lubrication and Maintenance schedules, fluid changes, filter replacement, inspections
Diagnostics And Troubleshooting:
System-specific troubleshooting guides, diagnostic charts, symptom-to-cause analysis
Repair And Rebuild:
Step-by-step repair procedures for all major components, including exploded views and detailed diagrams
Body And Frame:
Body and Frame: Procedures for body panel removal/installation, frame straightening (if equipped with body-on-frame chassis for some components), bumper service, and interior trim removal.
Depth:
Comprehensive from basic maintenance to advanced diagnostic and repair procedures, including detailed specifications and torque values
Searchability:
As a PDF, the manual should be searchable by keyword, allowing users to quickly find specific information.
Printability:
High-resolution, designed for clear printing of text, photos, exploded views, and diagrams
Diagram Clarity:
Expect clear, legible diagrams and exploded views essential for understanding component relationships and assembly/disassembly steps.
Digital Binding:
N/A (digital download)
Digital Paper Equivalent:
N/A (digital download)
Engine Options:
Likely includes 2.5L I4 (AMC 150), 4.0L I6 (AMC 242). Specific engine designations (e.g., carburetor vs. fuel injection) will be detailed in the manual.
Horsepower And Torque:
Detailed specifications for each engine variant will be provided in the manual. For reference, the 4.0L I6 typically produced around 173 hp and 220 lb-ft of torque in this era.
Fuel Delivery:
Details on fuel injection (MPI) or carburetor systems, fuel pump pressure, injector specifications, and fuel filter replacement procedures.
Engine Codes:
The manual will likely reference specific engine codes for the 2.5L (e.g., AMC 150) and 4.0L (e.g., AMC 242), aiding in accurate parts identification and service.
Manual Transmission:
Likely includes the AX-4 (4-speed manual) and possibly the NV3550 (5-speed manual) for Wrangler, and AX-15 for Comanche/Cherokee. Specifics on clutch, linkages, and fluid requirements will be covered.
Automatic Transmission:
Likely includes the AW-4 (4-speed automatic) for Cherokee/Wagoneer/Comanche and the TF-999 (3-speed automatic) for Wrangler. Manual will detail fluid types, capacities, shift linkage adjustments, and internal component repair.
Transfer Case:
Coverage for NP231 (Command-Trac) and NP242 (Selec-Trac) transfer cases, including lubrication, maintenance, and repair.
Wheelbase:
Varies by model: Cherokee/Wagoneer (XJ) approx. 101.4 inches, Comanche (MJ) approx. 119.0 inches, Wrangler (YJ) approx. 93.4 inches. Exact dimensions will be in manual.
Length Width Height:
Specific dimensions for each body style (2-door, 4-door, pickup bed length) will be detailed.
Curb Weight:
Will vary significantly by model, engine, and configuration. Manual will provide GVWR and curb weights for specific trims.
Crash Test Data:
While specific NHTSA ratings for 1988 vehicles are less common in FSMs, the manual will detail passive restraint systems (seat belts, etc.) and safety-related structural components.
Restraint Systems:
Detailed information on seat belt systems, including adjustments, pre-tensioners (if applicable), and replacement procedures. Coverage of passive restraint systems specified for the models.
Audio Systems:
Covers factory-installed AM/FM radios, cassette players, and speaker systems. Information on antenna systems and wiring will be present.
Cruise Control:
Detailed procedures for diagnosing and repairing the Vehicle Speed Control System (cruise control).
Wiring Diagrams:
Extensive wiring diagrams for all electrical systems, crucial for troubleshooting any aftermarket modifications or factory electrical faults.
Oil Change Intervals:
Typically every 3,000-5,000 miles or 3-6 months, depending on driving conditions. Manual will specify exact intervals for different engine oils and filters.
Tune Up Intervals:
Spark plug replacement, distributor cap/rotor inspection/replacement (if equipped), air filter replacement will have specified intervals, typically around 30,000 miles.
Engine Oil:
Likely API SF or SG service category. Viscosity grades such as 10W-30 or 10W-40 depending on climate. Manual will provide precise specifications.
Transmission Fluid:
Automatic: Chrysler ATF+3 (or equivalent). Manual: Gear oil (e.g., GL-4 or GL-5 for manual transmissions). Transfer Case: Specific gear oil. Manual will list exact Mopar or recommended fluid part numbers and specifications.
Coolant:
Ethylene glycol-based antifreeze mixed 50/50 with distilled water. Manual will specify the required freeze protection level and color/type of coolant.
Brake Fluid:
DOT 3 brake fluid is standard for this era. Manual will confirm and specify any specific Mopar fluid recommendations.
Power Steering Fluid:
Typically a Type A or Type F automatic transmission fluid (ATF) or power steering fluid specific to Chrysler/Jeep. Manual will verify.
Common Wear Items:
Leaf spring bushings, U-joints, sway bar links, radiator, water pump, headliner fabric degradation (especially in warmer climates).
Common Engine Issues:
The 4.0L I6 is known for its durability but can suffer from rear main seal leaks, oil filter adapter housing leaks, and occasionally cracked cylinder heads (though less common in the earlier 4.0L variants). The 2.5L is generally robust.
Common Transmission Issues:
AW4 leaks and occasional valve body issues; AX-15 clutch wear and synchro problems. Manual will provide diagnostic steps.
Jeep Legacy:
Jeep's reputation for ruggedness and off-road capability, established with models like the CJ and Wagoneer.
Xj Cherokee Wagoneer:
The XJ Cherokee, introduced in 1984, revolutionized the SUV market with its unibody construction, offering a lighter, more car-like ride while retaining off-road prowess. The Wagoneer variant was a more upscale version.
Mj Comanche:
The Comanche, based on the Cherokee's unibody platform, was Jeep's entry into the compact pickup truck segment. It offered unibody truck construction, a unique offering in its class.
Yj Wrangler:
The YJ Wrangler, introduced in 1987, replaced the iconic CJ. It featured a more modern design, including coil springs (unlike the CJ's leaf springs) and rectangular headlights, a controversial but functional change.
Manufacturing Locations:
Primarily Toledo, Ohio, USA.
