JeepWagoneer1990Overview/jeep/wagoneer/1990/base/

1990 Jeep Wagoneer

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1990 Wagoneer.

Transmission Automatic 3-spd

The 1990 Jeep Wagoneer arrived with a three-speed automatic and EPA fuel-economy ratings of 10/12/11 mpg, its powertrain requiring 6 quarts of oil—specifying viscosities of 20W-40, 20W-50, or 10W-40 API—per service interval. Owner data records only 19 total complaints for this model year, with Service Brakes, Hydraulic standing out as the primary concern across five recalls. As the opening entry in the 1990–2025 complaint timeline, this model year represents the beginning of a reliability arc that would drop to just one reported complaint by 1992 before surging to 188 in 2022, placing the 1990 edition within the model’s quietest period for documented failures.

Model year202520242023202219901989198819871986

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity6 qt w/ filterOEM · verified
Engine oil type20W-40 / 20W-50 / 10W-40 APIOEM · verified
EPA fuel economy10/12/11 mpgEPA · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 3-spd

Dimensions & weight NHTSA vPIC

Overall length186.6 in
Overall width74.8 in
Overall height66.5 in
Wheelbase108.7 in
Curb weight4508 lb
Track (front / rear)59.4 / 58.3 in

Ratings & economy EPA / vPIC

EPA city / highway / combined10 / 12 / 11 mpg
Drivetrain4-Wheel or All-Wheel Drive
Recommended fuelRegular Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the Wagoneer of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

9.1–16.1 sec0–60 mph (tested)quickest 9.10 sec — 1987 Limited
YearTrim / engine0–60¼ mileHPDrivetrain
1987Limited 4.0L I-69.10 sec17.00 sec173 hp4x4
1984Limited 2.5L I-415.70 sec20.00 sec105 hp4x4
1963SUV 3.8L I-616.10 sec20.50 sec140 hp4x4

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 6 qt w/ filter of 20W-40 / 20W-50 / 10W-40 API engine oil, 75W-90 · GL-5 · 80W-90 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil75W-90 · GL-5 · 80W-90
Differential Gear Oil Capacity4 Pints,
Engine CoolantHOAT · MS9769
Engine Oil20W-40 · 20W-50 · API · 10W-40 · 5W-30
Engine Oil Capacity6 qt w/ filter
Power Steering FluidMS-5931

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 60,000 mi; coolant every 7,500 mi. The big-interval services (every 7,500 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 7,500 miCV Joint Boot (inspect) · Differential (inspect fluid level) · Driveshaft U-Joint (lubricate) · Engine Coolant System (leak inspection) · Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 30,000 miBands (adjust) · Body Latches, Locks & Hinges (inspect) · Brake System (inspect) · Drive Axle Assembly (drain & refill) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill)
At 52,500 miEngine Coolant System (drain, flush & refill)
Every 52,500 miAccessory Drive Belt (inspect)
Every 60,000 miBattery (replace) · Distributor Cap (inspect) · Distributor Rotor (inspect) · Spark Plug Wires (replace) · Vacuum Line (inspect)
Every 82,500 miOxygen Sensor (replace)

Owner how-tos

Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.

Common procedures

Key fob — remote (RKE) programming programming new fob buttons Dealer tool OEM · verified
Tool requiredDRBIII scan tool (dealer / locksmith)
WhyTransmitter codes are written into the receiver in the passenger door module
Anti-theft (SKIS) — module initialization after immobilizer module replacement Dealer tool OEM · verified
When neededAfter Sentry Key Immobilizer Module (SKIM) replacement
Tool requiredDRBIII scan tool
Also requiredThe vehicle's four-digit PIN code

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 1990 Jeep Wagoneer represents the peak of federal regulatory activity for its generation, recording 19 complaints, 5 recalls, and 2 investigations. This contrasts sharply with the immediately following years; 1991 complaints plummeted to 2 with 2 recalls, and by 1992, recalls dropped to zero while complaints remained at just 1, establishing a low-complaint trend that persisted through 2001. The 1990 data points to early-lifecycle teething problems heavily concentrated in the braking system, with "Service Brakes, Hydraulic" accounting for 12 of the 19 complaints, alongside 1 crash complaint and 0 fire complaints. The provided federal record does not specify the root cause of these brake failures. Because 1990 carries a significantly higher volume of documented defects and recalls compared to the materially improved 1991 and 1992 models, it is a relatively risky year to buy unless a buyer can verify that all five recall remedies have been properly completed.

5
Open recalls
NHTSA campaigns
10
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
19
Owner complaints
1 involved a crash · 0 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 19 complaints on record, top 7 components.

Service Brakes, Hydraulic12
Engine & Engine Cooling2
Service Brakes, Air1
Vehicle Speed Control1
Tires1
Steering,Service Brakes, Hydraulic,Engine & Engine Cooling1
Seats1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 5 campaigns on record for this vehicle.

91V003000Service Brakes, Hydraulic:Foundation Components:Hoses, Lines/Piping, And FittingsReported 02/10/1991

THERE MAY BE HYDRAULIC FLUID CONTAMINATION FROM CONDENSATION FORMATION THAT CAN PLUG THE ABS BRAKE BOOSTER PUMP FILTER; STRESS CORROSION OF THE MASTER CYLINDER SNAP RING HAS BEEN TRACED TO CHLORINE LEAKING FROM THE LOW… Remedy: REPLACE ABS LOW PRESSURE HOSE; REBUILD MASTER BRAKE CYLINDER; INSPECT, SERVICE INTERFERENCE PROBLEMS, AND REPLACE FRONT BRAKE HOSE AS NECESSARY.

91V063000Service Brakes, Hydraulic:Foundation Components:Hoses, Lines/Piping, And FittingsReported 15/04/1991

IMPROPER INSERTION/CRIMPING OF THE HOSE-TO-END FITTINGS OF THE HIGH PRESSURE HOSE ON THE ANTI-LOCK BRAKE SYSTEM CAN CAUSE DETACHMENT OF THE HOSE FROM THE ABS SYSTEM, AND DISCHARGE OF HYDRAULIC FLUID. Remedy: REPLACE THE ABS HIGH PRESSURE HOSE.

Technical service bulletins NHTSA · verified

Showing 5 of 10 bulletins on record with NHTSA.

BulletinDateComponentSummary
0800600REV2000-12-29Electrical SystemSUBJECT REGARDING WIRE SPLICE REPAIRS. *SB
2300800B2000-11-24SeatsSUBJECT REGARDING CHILD SEAT TETHER ANCHORS. *TT
2308002000-03-03SeatsSUBJECT REGARDING CHILD SEAT TETHER ANCHORS. *TT
0806002000-02-25Electrical SystemTHIS BULLETIN PROVIDES A REVISED WIRE SPLICE PROCEDURE AND RELATED PARTS. *TT
233599REVA1999-10-01StructureSUBJECT ON THE CHILD SEAT TETHER ANCHORS. *MJS

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Wagoneer. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 1990 Wagoneer take?

6 qt w/ filter of ABOVE 30 degrees F: 20W-40 OR 20W-50 API, ABOVE 0 degrees F: 10W-40 API, BELOW 60 degrees F: 5W-30 API, per the factory manual.

Does the 1990 Wagoneer have open recalls?

NHTSA lists 5 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Wagoneer get?

EPA figures are 10 city / 12 highway / 11 combined mpg.