JeepComanche1986Overview/jeep/comanche/1986/base/

1986 Jeep Comanche

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1986 Comanche.

The 1986 Jeep Comanche required 4 quarts of oil with filter and recommended viscosities of 20W-40, 20W-50, or 10W-30 API, and it recorded six total owner complaints—with seat belts being the most common issue—alongside six recalls. This model year falls outside the 1990–1992 complaint history, which peaked at 14 complaints in 1990 and bottomed at 2 in 1992, meaning its reliability record is not captured in that dataset and thus cannot be directly compared to those later years.

Model year199119901989198819871986

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-30 APIOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length194.5 in
Overall width71.7 in
Overall height63.8 in
Wheelbase120.1 in
Curb weight2932 lb

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-30 API engine oil, Front: 75W- in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear OilFront: 75W-
Differential Gear Oil Capacity2.5 Pints
Differential Gear OilFront: 75W-
Differential Gear Oil Capacity4.9 Pints
Engine CoolantETHYLENE GLYCOL
Engine Oil20W-40 · 20W-50 · API · 10W-30 · 10W-40 · 5W-30
Engine Oil Capacity4 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 5,000 mi; coolant every 15,000 mi. The big-interval services (every 15,000 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 1,000 miCylinder Head (torque bolts) · Engine Valves (inspect valve lash)
At 5,000 miAccessory Drive Belt (inspect)
Every 5,000 miBattery (inspect electrolyte level) · Differential (inspect fluid level) · Engine Oil Filter (replace) · Tire & Wheel Assembly (inspect)
Every 7,500 miBrake Hydraulic System (inspect fluid level) · Clutch Master Cylinder (inspect fluid level) · Engine Oil (drain & refill) · Exhaust System (Complete) (inspect) · Power Steering System (inspect) · Steering Gear Box Assembly (inspect)
Every 15,000 miAccessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill)
Every 22,500 miEngine Coolant System (drain, flush & refill)
At 25,000 miEngine Coolant System (drain, flush & refill)
Every 30,000 miBands (adjust) · Body Fasteners (torque) · Body Latches, Locks & Hinges (inspect) · Brake System (inspect) · Choke System (inspect) · Clutch Assembly (inspect)
Every 55,000 miPCV System (inspect)

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 provided federal record spans 1990 to 1992 and shows a steady downward trend, with complaints falling from 14 to 2 and recalls dropping from 2 to 0 across that period. The 1986 model year sits entirely outside this recorded window, and no aggregate complaint, recall, investigation, or TSB totals are provided for it, making direct quantitative comparison unsupported. What is documented for 1986 are its top complaint-area entries, comprising two seat-belt reports and one each in the Suspension,Engine & Engine Cooling, Engine & Engine Cooling, and Equipment categories, alongside zero crash and zero fire complaints; the data do not specify root causes. Because 1986 predates the documented decline and lacks the comprehensive federal totals available for later years, its position in the model run’s reliability arc is unverified. With no year-by-year totals to confirm its standing and only limited system-specific entries to review, 1986 must be viewed as an unquantified risk, meaning this is not demonstrably a good year to buy based solely on this federal record.

6
Open recalls
NHTSA campaigns
0
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
6
Owner complaints
0 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★★
Side★★★★★
Rollover★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 6 complaints on record, top 5 components.

Seat Belts2
Suspension,Engine & Engine Cooling1
Engine & Engine Cooling1
Equipment1
Power Train1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 6 campaigns on record for this vehicle.

85V139000Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And FittingsReported 29/10/1985

JEEPS MAY HAVE AN IMPROPERLY CONNECTED FUEL LINE FITTING WHICH COULD BECOME DISCONNECTED AND CAUSE GASOLINE TO BE SPILLED. CONSEQUENCE OF DEFECT: IF THE FUEL LINE BECOMES DISCONNECTED, SPILLS GASOLINE AND AN IGNITION… Remedy: RECONNECT FUEL LINE FITTING, AS REQUIRED.

86V031000Equipment:Other:LabelsReported 25/02/1986

GROSS WEIGHT RATINGS AND TIRE PRESSURES INFORMATION ON THE CERTIFICATION LABEL ARE INCORRECT, THESE DO NOT COMPLY TO FEDERAL REGULATION PART 567. CONSEQUENCE OF DEFECT: THIS INFORMATION IS NECESSARY SO THAT THE TRUCK… Remedy: REPLACEMENT LABELS WITH CORRECT INFORMATION WILL BE MAILED TO OWNERS.

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 Comanche. 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 1986 Comanche take?

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.

Does the 1986 Comanche have open recalls?

NHTSA lists 6 recall campaign(s) for this model year. Check your specific vehicle by VIN.