Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1984 Grand Wagoneer.
The 1984 Jeep Grand Wagoneer, a full‑size SUV in the Grand Wagoneer lineage, requires a modest 4 qt of oil with filter and accepts a range of viscosities—20W‑40, 20W‑50 or 10W‑30, all meeting API standards. Its ownership record is notably clean, tallying just two total complaints and two recalls, with the singular area of concern centered on engine and engine‑cooling systems. When viewed against the broader complaint history that spans 1990‑2026, the 1984 model sits near the low end of reported issues, eclipsed only by the 1991 year’s single complaint and far below the peak of 55 complaints recorded in 2022. Consequently, the 1984 Grand Wagoneer is regarded as one of the more reliable vintages in the model’s long‑term reliability profile.
Fluid capacities, tune-up values and fuel economy at a glance.
Engine, drivetrain, dimensions and economy.
| Overall length | 186.6 in |
| Overall width | 74.8 in |
| Overall height | 66.5 in |
| Wheelbase | 108.7 in |
| Curb weight | 4231 lb |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the Grand Wagoneer of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.
| Year | Trim / engine | 0–60 | ¼ mile | HP | Drivetrain |
|---|---|---|---|---|---|
| 1990 | 5-door 5.9L V8 | 13.30 sec | 19.20 sec | 144 hp | 4x4 |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4 qt w/ filter of 20W-40 / 20W-50 / 10W-30 API engine oil, Front: 75W- in the differential.
| Differential Gear Oil | Front: 75W- |
| Differential Gear Oil Capacity | 2.5 Pints |
| Differential Gear Oil | Front: 75W- |
| Differential Gear Oil Capacity | 4.8 Pints |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 20W-40 · 20W-50 · API · 10W-30 · 10W-40 · 5W-30 |
| Engine Oil Capacity | 4 qt w/ filter |
| Engine Oil | 20W-40 · 20W-50 · API · 10W-30 · 10W-40 · 5W-30 |
Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.
| Tool required | DRBIII scan tool (dealer / locksmith) |
| Why | Transmitter codes are written into the receiver in the passenger door module |
| When needed | After Sentry Key Immobilizer Module (SKIM) replacement |
| Tool required | DRBIII scan tool |
| Also required | The vehicle's four-digit PIN code |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The federal record for the Grand Wagoneer begins in 1990, so direct data for the 1984 model year is absent. However, the earliest available years (1990–1992) show a very low complaint volume (2, 1, and 1 respectively) and zero recalls, indicating a period of relative quiet. This contrasts with a notable spike in 1993 (9 complaints, 7 recalls) and a dramatic surge in 2022 (55 complaints, 9 recalls, 919 TSBs) that defines the later generation. The 1984 model predates the 1993 peak, and the low early-1990s numbers suggest that vehicles from this earlier era, including the 1984, likely experienced fewer reported issues as they aged. Based on the available trend, the 1984 Grand Wagoneer appears to be a solid buy from a complaint and recall standpoint, though its specific record is not captured in this dataset.
All 2 complaints on record, top 2 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 2 campaigns on record for this vehicle.
THE KEY OPERATED TAILGATE WINDOW WILL CONTINUE TO CLOSE IF THE SPRING LOADED KEY DOES NOT RETURN TO OFF POSITION WHEN RELEASED. Remedy: OWNERS SHOULD NOT LEAVE KEY IN TAILGATE OF UNATTENDED VEHICLE. REPAIR MECHANISM TO ASSURE PROPER KEY RETURN OPERATION.
POSSIBILITY THAT THE FRONT WHEEL BEARINGS DO NOT HAVE ENOUGH LUBRICATION. Remedy: INNER WHEEL BEARINGS WILL BE INSPECTED AND REPACKED WITH LUBRICANT, OR REPLACED IF INSUFFICIENTLY LUBRICATED.
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
4 qt w/ filter of ABOVE 30 degrees F: 20W-40 OR 20W-50 API, ABOVE 0 degrees F: 10W-30 OR 10W-40 API, BELOW 60 degrees F: 5W-30 API, per the factory manual.
NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.