JeepCherokee19984.0L L6/jeep/cherokee/1998/4-0l-l6/
XJ platform

1998 Jeep Cherokee — 4.0L L6

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1998 Cherokee 4.0L L6.

Body SUVEngine 4.0L L6Transmission Automatic 4-spd

The 1998 Jeep Cherokee is an SUV on the XJ platform, powered by a 4.0L L6 paired with a four-speed automatic transmission that the EPA rates at 14/19/16 mpg and that calls for 4 quarts of 10W-30 or 5W-30 API oil with filter. Within the model’s 1990–2026 complaint history, the 1998 model year generated 1,558 owner complaints and 14 recalls. That volume sits well below the 2014 peak of 2,636 complaints yet far above the three recorded for 2023, placing this model year in the middle of the observed range with the powertrain standing out as the top complaint area.

Model year200019991998199719961995

Quick specs

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

Engine oil capacity4 qt w/ filterOEM · verified
Engine oil type10W-30 / 5W-30 APIOEM · verified
Lug nut torque85-115 ft-lbsOEM · verified
EPA fuel economy14/19/16 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 34 · 500 CCA battery, OE oil filter 05281090AB. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known.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.

Battery groupBCI 34 · 500 CCAOEM · verified
Tire sizeP215-75R15OEM · verified
Wheel / rim7-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter05281090AB
Engine air filter53004383AC
Fuel filter04798301 discontinued
Spark plug68304020AA
Battery1BPB5800AA
Front wiper blades55155650AB alt 55155652AB
Serpentine belt53010314 alt 53010234AB
Thermostat52028186AC alt 53020547AC

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length166.1 in
Overall width69.3 in
Overall height63.8 in
Wheelbase101.6 in
Curb weight2978 lb
Track (front / rear)57.9 / 57.9 in

Ratings & economy EPA / vPIC

EPA city / highway / combined14 / 19 / 16 mpg
DrivetrainRear-Wheel Drive
Recommended fuelRegular Gasoline

Performance & power Independent road tests

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

No 1998 road test on record; the results below are same-engine tests from nearby model years, each shown under its own year.

8.2–10.5 sec0–60 mph (tested)quickest 8.20 sec — 1997 Sport I-6
YearTrim / engine0–60¼ mileHPDrivetrain
1997Sport I-6 4.0L I-68.20 sec16.30 sec190 hp4x4
1997Sport I-6 4.0L I-69.10 sec16.90 sec190 hp4x4
1997Sport I-6 4.0L I-610.20 sec17.60 sec190 hp4x4
1999Sport I-6 4.0L I-68.90 sec16.90 sec190 hp4x4
1999Sport I-6 4.0L I-69.40 sec17.00 sec190 hp4x4
1996Sport I-6 4.0L I-68.30 sec16.40 sec190 hp4x4
2001Sport I-6 4.0L I-68.40 sec16.50 sec190 hp4x4
1990Laredo I-6 4.0L I-610.50 sec17.70 sec177 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 10W-30 / 5W-30 API engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 85-115 ft-lbs, the oil drain plug to 25.0 ft-lbs. The firing order is 1-5-3-6-2-4.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity3.4 Pints
Engine CoolantHOAT · MS9769
Engine Oil10W-30 · API · 5W-30
Engine Oil Capacity4 qt w/ filter
Power Steering FluidMS-5931

Engine torques

Connecting Rod (Large End) Bearings33-35 ft-lbs
Engine Oil Pan Drain Plug25.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/StudsPump bolts: 14 ft-lbs, Cover bolts: 9 ft-lbs

Chassis torques

Lug Nuts85-115 ft-lbs
Transfer Case Fill PlugSteel case: 35.0, Aluminum case: 18.0 ft-lbs
Transfer Case Drain PlugSteel case: 35.0, Aluminum case: 18.0 ft-lbs
Front Wheel Hub175 ft-lbs

Ignition

Cylinder Firing Order1-5-3-6-2-4
Ignition Coil Primary Resistance.95-1.20 Toyodenso ohms
Ignition Coil Secondary Resistance11,300-13,300 ohms
Spark Plug ManufacturerChampion
Spark Plug Gap0.040 in
Spark Plug Torque22.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.25 lbs
Oil GroupPAG
Oil Type100
Oil Capacity8.10 oz
Standard BCI Group Number34
Standard BCI Cranking Performance500 cca

Service checks

Pressure Test18 psi
Radiator Cap Pressure Relief12-18 psi
Thermostat Opening Temperature195 °F
Regulated Fuel System Pressure (With Vacuum)47-51 psi
Engine Compression120-150 PSI. 30 Maximum variation PSI.
Engine Oil Pressure25-35 psi
Engine Oil Pressure RPMIdle rpm
Intake Valve LashHydraulic in

Brakes

Brake ApplicationWITH 10 inch REAR DRUMS
Torque to Knuckle7-15 ft-lbs
Minimum Pad Thickness0.030 in
Minimum Shoe Thickness0.030
Brake ApplicationWITH 10 inch REAR DRUMS
Drum Runout Limit0.008 in
Drum Nominal Diameter10 in / 9 in
Drum Maximum Machining10.06 in / 9.06 in

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 4 stages

Prep Coat threads of left hand front bolt with sealant

122 ft. lbs.22 ft. lbs
245 ft. lbs.45 ft. lbs
3all bolts except L.H. front bolt110 ft. lbs
4100
Main Bearings — tightening sequence 7 stages
1caps 1, 2, 4, 5, 6, and 740 ft. lbs
2caps 1, 2, 4, 5, 6, and 770 ft. lbs
3caps 1, 2, 4, 5, 6, and 780 ft. lbs
4Push the crankshaft forward and backward. Load the crankshaft front or rear and tighten cap bolt No.3 to 40 ft. lbs.40 ft. lbs
5Tighten to 70 ft. lbs.70 ft. lbs
6Tighten to 80 ft. lbs.80 ft. lbs
7Rotate the crankshaft after tightening each main bearing cap to ensure the crankshaft rotates freely.

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 miBody Fasteners (torque) · Brake Line (inspect) · CV Joint Boot (inspect) · Driveshaft U-Joint (lubricate) · Engine Coolant System (leak inspection) · Engine Oil (drain & refill)
Every 15,000 miBattery (inspect electrolyte level) · Steering Linkage (inspect)
Every 22,500 miBrake Linings (inspect)
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)
At 51,000 miEngine Coolant System (drain, flush & refill)
Every 60,000 miSpark 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 federal record indicates a sharp escalation in reported issues during the late 1990s, with total complaints rising from 1,516 in 1997 to 2,113 in 1999. Specific data for the 1998 model year highlights Power Train issues as the dominant concern with 459 complaints, followed by 205 related to Service Brakes. Safety metrics for this model year include 213 crash complaints and 18 fire complaints, sitting within a generation period where Technical Service Bulletins peaked at 193 in 1999. This places the 1998 model at the crest of a high-complaint arc that began surging in 1997 and remained elevated through 2001, rather than the lower volumes seen in the early 1990s. Given the concentration of power train and brake complaints alongside the surrounding years' high complaint and TSB volumes, this is not a recommended year to buy unless the buyer is prepared for potential drivetrain and braking system repairs.

14
Open recalls
NHTSA campaigns
114
Service bulletins
Manufacturer communications
7
ODI investigations
Office of Defects Investigation
1,558
Owner complaints
213 involved a crash · 18 a fire

Owner complaints filed with NHTSA, by component

All 1,558 complaints on record, top 8 components.

Power Train459
Service Brakes, Hydraulic205
Fuel System, Gasoline82
Engine & Engine Cooling69
Electrical System63
Air Bags61
Steering38
Visibility36

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 10 campaigns on record for this vehicle.

09E012000Exterior LightingReported 07/04/2009

SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE… Remedy: SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE SAFETY RECALL BEGAN ON MAY 11, 2009. OWNERS MAY CONTACT SABERSPORT AT…

13V252000Fuel System, Gasoline:Storage:Tank AssemblyReported 19/06/2013

Chrysler Group LLC (Chrysler) is recalling certain model year 1993-1998 Jeep Grand Cherokee and 2002-2007 Jeep Liberty vehicles. The fuel tanks in these vehicles are at risk of failure and leakage in certain rear… Remedy: Owners may take their vehicles to dealers and the dealers will perform a free inspection of the rear structure. On vehicles in the recall that are not equipped with a tow hitch…

Technical service bulletins NHTSA · verified

Showing 5 of 114 bulletins on record with NHTSA.

BulletinDateComponentSummary
90042752020-07-22Electrical SystemKEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC…
90042752020-07-22Electrical SystemKEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC…
08-049-202020-04-22Electrical SystemCharging System, Battery Diagnostic Tools and Warranty This information only bulletin…
31005192019-11-20StructureUse of Aftermarket Parts This bulletin involves discussing FCA US LLC position with…
31006192019-11-20StructureRepair Parts Used For Structural Repairs This bulletin involves discussing FCA US LLC…

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 Cherokee. 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 1998 Cherokee 4.0L L6 take?

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

Does the 1998 Cherokee have open recalls?

NHTSA lists 14 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 4.0L L6 get?

EPA figures are 14 city / 19 highway / 16 combined mpg.