The 1986 Jeep CJ7 is a classic 4x4 vehicle featuring a rugged body-on-frame construction, available with either the 2.5L four-cylinder or 4.2L inline-six engine, manual or automatic transmission options, part-time four-wheel drive system, and iconic removable doors and soft top. Below are key sections covering operation, maintenance, specifications, and troubleshooting for your CJ7.
Key components: Steel body with removable doors, fold-down windshield, soft top, 4-wheel drive system, and rugged suspension.
| Feature | Description |
|---|---|
| Engine Options | 2.5L 4-cylinder or 4.2L inline-six |
| Transmission | 4-speed manual or 3-speed automatic |
| Transfer Case | Dana 300 part-time 4WD |
| Suspension | Leaf spring suspension front and rear |
| Brakes | Front disc, rear drum |
| Fuel Capacity | 15.5 gallons |
| Wheelbase | 93.5 inches |
| Ground Clearance | 8.5 inches |
Standard gauges include speedometer, fuel level, coolant temperature, oil pressure, and ammeter.
WARNING! Never operate vehicle with red warning lights illuminated.
Proper starting procedure and daily operation guidelines.
CAUTION! Always wear seat belts. Doors may not provide crash protection.
Regular maintenance intervals for optimal performance and longevity.
| Interval | Service Items |
|---|---|
| Every 3,000 miles | Oil and filter change, tire rotation |
| Every 6,000 miles | Lube chassis, check brake fluid |
| Every 12,000 miles | Replace air filter, check spark plugs |
| Every 30,000 miles | Change transmission and transfer case fluid |
| Every 60,000 miles | Replace coolant, inspect timing chain |
Recommended fluids and capacities for all systems.
Tip: Always use manufacturer-recommended fluids.
Standard tire size and maintenance procedures.
WARNING! Never mix different tire sizes or types on 4WD vehicle.
12-volt negative ground system with 58-amp alternator.
| Component | Specification |
|---|---|
| Battery | 12V, 55 amp-hour |
| Alternator | 58 amp output |
| Starter | 12V direct drive |
| Fuses | Located in fuse block under dash |
| Bulbs | Sealed beam headlights |
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Battery, fuel, ignition | Check battery connections, fuel level, spark plugs |
| Hard shifting | Low fluid, linkage | Check transmission fluid, inspect shift linkage |
| 4WD won't engage | Hubs, transfer case | Lock front hubs manually, check transfer case fluid |
| Overheating | Coolant, thermostat | Check coolant level, inspect radiator, test thermostat |
| Brake pull | Calipers, alignment | Inspect brake calipers, check front end alignment |
Service: Contact authorized Jeep dealer for major repairs.
12-month/12,000-mile basic warranty covering defects in materials and workmanship. Powertrain warranty: 5 years/50,000 miles. Rust-through protection: 3 years/unlimited mileage. See dealer for complete warranty details and exclusions.