1986 Toyota 4RUNNER problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
7 owner complaints analyzed
0 distinct recall campaigns
284,000 mi median reported failure mileage
Scope: 1986 model year. Data snapshot: . 2 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Engine And Engine Cooling:Cooling System:Radiator Assembly is the most frequently named component, appearing in 1 of 7 complaints (14.3%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 2 | 28.6% |
| Steering behavior | 1 | 14.3% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Engine And Engine Cooling:Cooling System:Radiator Assembly | 1 |
| Engine And Engine Cooling:Engine | 1 |
| Equipment:Mechanical:Carrier/Rack | 1 |
| Parking Brake:Conventional | 1 |
| Parking Brake:Conventional:Mechanical:Linkage And Cable | 1 |
| Seat Belts | 1 |
| Service Brakes, Hydraulic:Pedals And Linkages | 1 |
| Tires:Sidewall | 1 |
Engine And Engine Cooling:Cooling System:Radiator Assembly: 1; Engine And Engine Cooling:Engine: 1; Equipment:Mechanical:Carrier/Rack: 1; Parking Brake:Conventional: 1; Parking Brake:Conventional:Mechanical:Linkage And Cable: 1; Seat Belts: 1; Service Brakes, Hydraulic:Pedals And Linkages: 1; Tires:Sidewall: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 2 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 2
150,000 and above miles has the most reports with usable mileage (2). 5 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 1996 | 2 |
| 2000 | 3 |
| 2003 | 1 |
| 2023 | 1 |
1996: 2; 2000: 3; 2003: 1; 2023: 1
Pattern summary
Engine And Engine Cooling:Cooling System:Radiator Assembly leads the component reports. Braking behavior appears in 2 complaint narratives. Steering behavior appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10049623 · 2003-12-12 (December 12, 2003)
ON 1986 TOYOTA 4 RUNNERS THE HAND BRAKE IS SOLELY RELIED ON TO ADJUST THE BACK BRAKES. THE PROBLEM APPEARS TO BE THE BELL CRANK BOOT DOES NOT SUFFICIENTLY PREVENT CORROSION BETWEEN THE BELL CRANK AND ITS FRAME AT THE BACKING PLATE. THIS CAUSES THE ADJUSTING SCREW TO NOT ENGAGE AND THEREFORE THE BACK BRAKES DO NOT FUNCTION PROPERLY. WITH LESS FORCE ON THE BACK BRAKES THAN THE FRONT BRAKES THE FRONT BRAKES TEND TO LOCK UP. STEERING CONTROL IS THEN LOST.*AK
Owner-reported narrative. 268,000 miles reported. Look up ODI 10049623 at NHTSA ↗
Owner report 503800 · 1996-04-25 (April 25, 1996)
VEHICLE ROLLED DOWN HILL DUE TO FAILURE OF PARKING BRAKE, INJURING ONE/KILLING ONE. *DSH
Owner-reported narrative. Look up ODI 503800 at NHTSA ↗