JeepWrangler1994Overview/jeep/wrangler/1994/base/
YJ platform

1994 Jeep Wrangler

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1994 Wrangler.

Body SUV

The 1994 Jeep Wrangler is a YJ-platform SUV that takes 4 quarts of oil with filter across viscosities of 20W-40, 20W-50, or 10W-40 API. In the broader complaint history spanning 1990 to 2023, this model year recorded 174 total owner complaints — far below the peak of 1,793 in 2018 but well above the low of 5 in 1996 — with the fuel system emerging as the top complaint area and four recalls issued. That mid-range complaint volume positions the 1994 Wrangler as a relatively stable but not trouble-free entry in the YJ generation's reliability arc.

Model year202620252024202320222021202019941993

Quick specs

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

Engine oil capacity4 qt w/ filterOEM · verified
Engine oil type20W-40 / 20W-50 / 10W-40 APIOEM · verified

Fitment & sizes

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

From the factory this vehicle uses OE oil filter 05281090AB. Note the factory engine air filter, fuel filter and front wiper blades are now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. 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 filter05281090AB
Engine air filter53006317 discontinued
Fuel filter33000076 discontinued
Spark plug68304020AA
Front wiper blades55000299 discontinued
Serpentine belt53010276 alt 53031118AB
Thermostat83501426AD alt 53020547AC

Performance & power Independent road tests

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

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

15.4 sec0–60 mph (tested)quickest 15.40 sec — 1990 Sahara 2-door
YearTrim / engine0–60¼ mileHPDrivetrain
1990Sahara 2-door 4.2L I-615.40 sec20.00 sec112 hp4x4

Service quick specs OEM factory data

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

This engine holds 4 qt w/ filter of 20W-40 / 20W-50 / 10W-40 API engine oil, 75W-90 · GL-5 · 80W-140 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil75W-90 · GL-5 · 80W-140
Differential Gear Oil Capacity2.5 Pints
Engine CoolantHOAT · MS9769
Engine Oil20W-40 · 20W-50 · API · 10W-40 · 5W-30
Engine Oil Capacity4 qt w/ filter
Engine Oil20W-40 · 20W-50 · API · 10W-40 · 5W-30
Engine Oil Capacity6 qt w/ filter

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 30,000 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 miBrake Line (inspect) · CV Joint Boot (inspect) · Driveshaft U-Joint (lubricate) · Engine Coolant System (leak inspection) · Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 15,000 miBattery (inspect electrolyte level)
Every 30,000 miAccessory Drive Belt (inspect) · Bands (adjust) · Drive Axle Assembly (drain & refill) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Spark Plugs (replace)
Every 37,500 miTransmission Assembly (drain & refill)
At 52,500 miEngine Coolant System (drain, flush & refill)
Every 60,000 miDistributor Cap (inspect) · Distributor Rotor (inspect) · Fuel Filter (replace) · Spark Plug Wires (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 1994 Jeep Wrangler recorded 174 complaints, 4 recalls, 6 investigations, and 18 Technical Service Bulletins (TSBs). This reflects a continuing upward trend in complaints compared to the 124 reported in 1993, leading toward 221 in 1995. Throughout the early 1990s, the generation experienced a steady rise in complaints and TSBs, while recalls slightly decreased from 7 in 1990 to 3 by 1995. The 1994 model sits in the middle of this escalating arc, with the most frequent issues involving the fuel system (37), engine and engine cooling (21), and parking brake (19). While 15 crash and 7 fire complaints were reported, the data does not specify the root causes. Because this year marks a significant increase in complaints and TSBs relative to the 1990–1992 period, it is not the ideal year to buy.

4
Open recalls
NHTSA campaigns
18
Service bulletins
Manufacturer communications
6
ODI investigations
Office of Defects Investigation
174
Owner complaints
15 involved a crash · 7 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 174 complaints on record, top 8 components.

Fuel System, Gasoline37
Engine & Engine Cooling21
Parking Brake19
Seat Belts18
Power Train18
Service Brakes, Hydraulic9
Steering7
Structure6

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 4 campaigns on record for this vehicle.

06E026000Exterior LightingReported 23/03/2006

CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL… Remedy: PRO-A MOTORS WILL NOTIFY OWNERS AND OFFER TO REPURCHASE THE LAMPS. THE RECALL BEGAN ON APRIL 3, 2006. OWNERS MAY CONTACT PRO-A MOTORS AT 323-838-2988.

04E041000EquipmentReported 07/06/2004

BESTOP AFTERMARKET REAR SHELL ROOF RACKS,MANUFACTURED BETWEEN APRIL 27 AND MAY 20, 2004, DESIGNED FOR USE WITH THE BESTOP HARDTOP MADE FOR THE 1986-1995 AND 1997-2003 JEEP WRANGLER. THE COCKPIT COVER MAY NOT STAY… Remedy: BESTOP WILL NOTIFY ITS CUSTOMERS AND PROVIDE A REPAIR KIT AND INSTALLATION INSTRUCTIONS FREE OF CHARGE. OWNER NOTIFICATION BEGAN JUNE 16, 2004. OWNERS WHO DO NOT RECEIVE THE FREE…

Technical service bulletins NHTSA · verified

Showing 5 of 18 bulletins on record with NHTSA.

BulletinDateComponentSummary
D-20-02 Rev. A2020-03-04EquipmentDIPAP Requirements - Addition of Jeep Wrangler (JL/JK) and Jeep Gladiator (JT) Hard Top…
R2118796A2016-02-26Engine And Engine CoolingValve Body. These may cause over drive cycling.
90028492014-09-03StructurePart Description: Insulator on Lever Assy Manual Valve - Valve Body - RWD Transmission…
90028492014-09-03EquipmentPart Description: Insulator on Lever Assy Manual Valve - Valve Body - RWD Transmission…
18020022002-06-24Unknown Or OtherFLASH PROGRAMMING FAILURE RECOVERY. *SLC

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 Wrangler. 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 1994 Wrangler take?

4 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 1994 Wrangler have open recalls?

NHTSA lists 4 recall campaign(s) for this model year. Check your specific vehicle by VIN.