1986 Jeep Grand Wagoneer: common problems

Owners of the 1986 Jeep Grand Wagoneer filed 4 complaints with NHTSA, most often about electrical system and engine and cooling. Details by component below, with sources.

Key figures

Owner complaints: 4

What fails most often

1 Electrical system 50% of all complaints
2 Engine and cooling 25% of all complaints
3 Equipment 25% of all complaints
4 Powertrain 25% of all complaints
5 Seat belts 25% of all complaints
6 Structure 25% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Electrical system: 2 complaints (50% of all).
Engine and cooling: 1 complaints (25% of all).
Equipment: 1 complaints (25% of all).
Powertrain: 1 complaints (25% of all).
Seat belts: 1 complaints (25% of all).

Engines and transmissions

US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.

4.2 L · petrol · 6 cyl
5.9 L · petrol · 8 cyl
automatic, 3-speed
manual, 4-speed

Drive: AWD

Symptoms owners describe

How many of the 4 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

smoke, burning smell, fire2 · 50%
A/C or heater1 · 25%
door locks, latches, handles1 · 25%
overheating, coolant loss1 · 25%
loss of power / limp mode1 · 25%
seat belts1 · 25%

Components owners complain about

Component	Owner complaints	involving a crash	Technical service bulletins (TSB)
Electrical system	2	0	0
Engine and cooling	1	0	0
Equipment	1	0	0
Powertrain	1	0	0
Seat belts	1	0	0
Structure	1	0	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

There was no warning - the vehicle just started losing power with smoke and fowl odor coming from under hood area. The jeep dealership replaced the damaged engine components for around $1200.
Electrical system · 1999-12-14 · NHTSA complaint #716025
Vehicle fire due to failure of the wiring harness in the dashboard.
Electrical system · 1998-12-17 · NHTSA complaint #536269
Driver's and passenger side seat belt buckles have broken, unable to latch seat belt. Tt
Seat belts · 1996-02-14 · NHTSA complaint #979211
Coolant leaked into heater/ac housing, ac is no long working. Tt
Equipment · 1995-10-12 · NHTSA complaint #973306

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

19951
19961
19981
19991

Comparison

By complaint count this model year ranks 15,521 of 36,656 model years in the NHTSA data (top 42% most complained about).

On average one model year of the Grand Wagoneer has 9 complaints (23 years in the data). This year has 4, below average.

What to check before buying

Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Seat belts. Belt pretensioners after airbag deployment, SRS codes.

Other years of this model

Questions and answers

What are the most common problems with the 1986 Jeep Grand Wagoneer?

Owner complaints to NHTSA most often mention: electrical system, engine and cooling, equipment. Total complaints: 4. The most frequent symptoms in complaint texts: smoke, burning smell, fire (50%), A/C or heater (25%), door locks, latches, handles (25%).

How many service bulletins (TSB) were issued for the 1986 Jeep Grand Wagoneer?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 1986 Jeep Grand Wagoneer from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 1986 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.