Toyota4runner1990L4/toyota/4runner/1990/l4/

1990 Toyota 4runner — L4

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1990 4runner L4.

Body SUVEngine L4Transmission Automatic 4-spd

The 1990 Toyota 4runner L4 is a compact SUV built on a body-on-frame platform and powered by a four-cylinder engine paired with a four-speed automatic transmission, delivering EPA-estimated fuel economy of 17 mpg city, 19 mpg highway, and 18 mpg combined, while requiring 4.4 quarts of oil within the 15W-40 to 20W-50 viscosity range per API specifications; this model year represents the second generation of the 4runner and benefits from the proven reliability of the L4 engine family that underpinned Toyota's truck line during this era. According to aggregated owner complaint data spanning from 1990 through 2026, the 1990 model recorded 85 total complaints with engine and engine cooling issues comprising the most frequently reported problem area, and the vehicle was subject to two safety recalls during its production run, figures that position this model year well below the complaint peak of 707 recorded for the 2003 model year and reflect a comparatively trouble-free ownership experience within the nameplate's history.

Model year200019991998199519941993199219911990

Quick specs

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

Engine oil capacity4.4 qtOEM · verified
Engine oil type15W-40 / 20W-40 / 20W-50 APIOEM · verified
EPA fuel economy17/19/18 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses OE oil filter 90915YZZD1. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

OE service part numbers OEM · verified

Engine oil filter90915YZZD1
Engine air filter178017002083 alt 178013502083
Fuel filter2330065020 alt 2330039035
Spark plug9091901064
Front wiper blades85212YZZ09TM
Serpentine belt993321086083 alt 993321112078
Thermostat9091603078 alt 9091603079

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length176 in
Overall width66.5 in
Overall height66.1 in
Wheelbase103.5 in
Curb weight3728 lb
Track (front / rear)57.9 / 57.9 in

Ratings & economy EPA / vPIC

EPA city / highway / combined17 / 19 / 18 mpg
DrivetrainRear-Wheel Drive
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine holds 4.4 qt of 15W-40 / 20W-40 / 20W-50 API engine oil, 75W-90 · GL-5 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil75W-90 · GL-5
Differential Gear Oil Capacity3.5 Pints
Engine OilABOVE 10 degrees F
Engine Oil Capacity4.4 qt
Engine OilABOVE 10 degrees F
Engine Oil Capacity4.5 qt
Power Steering FluidATF

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; coolant every 30,000 mi. The big-interval services (every 30,000 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.

At 7,500 miUniversal Vehicle Operation (inspect idle speed)
Every 7,500 miAccessory Drive Belt (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 15,000 miAxle Shaft Oil Seal (inspect) · Body Fasteners (torque) · Body Latches, Locks & Hinges (inspect) · Brake Drum Assembly (inspect) · Brake Line (inspect) · Brake Linings (inspect)
Every 30,000 miEngine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Engine Valves (inspect valve lash) · Exhaust System (Complete) (inspect) · Fuel Line (inspect) · Fuel System (inspect)
At 45,000 miEngine Coolant System (drain, flush & refill)
At 60,000 miAccessory Drive Belt (inspect) · Universal Vehicle Operation (inspect idle speed)
Every 60,000 miFuel Evaporative Canister (inspect) · Fuel Tank Filler Cap O-Ring (inspect)
At 80,000 miOxygen Sensor (inspect)

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 Toyota 4Runner shows 85 complaints, 2 recalls, 4 investigations, and 29 TSBs, placing it at the higher end of the complaint spectrum for the early 1990s when compared to 1991 (50 complaints) and 1992 (68 complaints). Notably, 1990 recorded the most NHTSA investigations of any year in this early period, though the recall count remained low at 2—tied for the lowest across 1990–1992. The complaint trend across the generation reveals a sharp escalation beginning in 1995 (184 complaints), peaking around 2003 (707 complaints), then gradually declining through the 2010s. The 1990 model thus falls at the low end of a steadily rising complaint arc, with its top complaint areas being Engine & Engine Cooling (39), Power Train (10), and Structure (8), plus 10 crash-related complaints and 6 fire complaints. This positioning suggests the 1990 model is comparatively less problematic than the vehicles that followed in the mid-to-late 1990s and early 2000s, though its elevated complaint count relative to 1991–1992 warrants careful inspection. **The 1990 model represents a relatively safer choice within this generation, but prospective buyers should prioritize a thorough mechanical inspection given the engine-related complaints and fire incidents recorded.**

2
Open recalls
NHTSA campaigns
29
Service bulletins
Manufacturer communications
4
ODI investigations
Office of Defects Investigation
85
Owner complaints
10 involved a crash · 6 a fire

Owner complaints filed with NHTSA, by component

All 85 complaints on record, top 8 components.

Engine & Engine Cooling39
Power Train10
Structure8
Service Brakes, Hydraulic6
Tires3
Steering2
Latches/Locks/Linkages2
Power Train,Vehicle Speed Control2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

05V389000Steering:Linkages:Rod:Relay:ConnectingReported 06/09/2005

ON CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES, IF THE STEERING WHEEL IS REPEATEDLY TURNED UNDER CERTAIN CONDITIONS WHERE HIGH STEERING EFFORT AND POWER ASSIST ARE REQUIRED, FOR INSTANCE, WHEN FULLY TURNING THE… Remedy: DEALERS WILL REPLACE THE STEERING RELAY ROD. THE RECALL BEGAN OCTOBER 5, 2005. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331.

06E049000Exterior LightingReported 24/05/2006

CERTAIN CK MOTORSPORTS COMBINATION HEADLIGHTS, CLEAR CORNER, BUMPER, AND SIDE MARKER LIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON THE PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH… Remedy: CK MOTORSPORT WILL NOTIFY OWNERS AND REPLACE THE NONCOMPLIANT LAMPS FREE OF CHARGE. THE RECALL BEGAN ON JULY 1, 2006. OWNERS MAY CONTACT CK MOTORSPORT AT 1-909-610-7211.

Technical service bulletins NHTSA · verified

Showing 5 of 29 bulletins on record with NHTSA.

BulletinDateComponentSummary
TSB0032202023-08-17Air BagsTSB: Replacement certification labels (the vinyl label installed on the driver door or…
Toyota PRO19-022022-01-12TiresPOL: This consolidated Tire Warranty Guide contains the complete warranty terms for all…
T-SB-0032-20 Rev2021-02-03EquipmentTSB: Replacement certification labels (the vinyl label installed on the driver door or…
T-SB-0304-17 Obs2020-04-07EquipmentTSB: OBSOLETE NOTICE April 07, 2020: This bulletin is now obsolete. Please see…
T-SB-0032-202020-04-06EquipmentTSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service…

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

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VIN
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Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
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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 4runner L4 take?

4.4 qt of ABOVE 10 degrees F: 15W-40 API, 20W-40 API, 20W-50 API ABOVE -10 degrees F: 10W-30 API, 10W-40 API, 10W-50 API, BELOW 50 degrees F: 5W-30 API, per the factory manual.

Does the 1990 4runner have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the L4 get?

EPA figures are 17 city / 19 highway / 18 combined mpg.