1992 Toyota 4RUNNER Problems

What owners report

Owners of the 1992 Toyota 4Runner most often describe head gasket failures, with coolant or oil mixing, overheating, and sometimes sudden power loss, usually at high mileage. Some describe slow coolant loss or milky oil before the failure, while others describe it happening without warning while driving. Sudden unintended acceleration and brake pedal or brake line failures also come up, and some head gasket complaints say the dealer would not cover the repair.

1. 1
   Engine cooling

   Head gasket failure and coolant or oil mixing

   • 15 complaints (28%)
   • median 139,000 mi at 14.0 yrs old (7 state mileage, few)
   • filed 1996–2016

   Owners describe head gasket failures, with coolant loss without visible leaks, white exhaust steam, milky oil, overheating, and sometimes sudden power loss while driving. Some say the failure followed a service campaign or an earlier gasket repair, and some say the dealer would not cover labor or parts or did not acknowledge the problem. A complaint describes a cylinder with low compression, and the mechanic linked it to the head. Where mileage is recorded, these reports range from about 92,000 to 213,000 miles, and some occur after an earlier head gasket repair or campaign.

   1 related service bulletin

   What to check: Ask for records showing whether the head gasket campaign or an earlier gasket repair was done, and check the oil cap and dipstick for a milky look. On a test drive, watch for white exhaust smoke, rising temperature, or coolant loss without visible leaks.

   2 excerpts from owner complaints in NHTSA records

   “1992 Toyota 4-runner, 3.0 liter, v-6, 4 wd truck in shop for blown head gasket & possible cracked block. I understand this vehicle has a design flaw which causes head gaskets to blow over and over in spite of so-called gasket fix by Toyota which I had after 50,000 miles. Toyota should make it right to their customers by either fixing the flaw or reimbursing for costs to repair, tow & rent replacement vehicle.”

   NHTSA complaint #10135700, filed 2005-09, 145,000 miles

   “My wife and I own a 1992 4RUNNER. The head gasket in the engine malfunctioned causing oil and water to basically get mixed. We took it to the local Toyota dealer in our area (kendall Toyota in miami florida). We tried to explain to them what is listed on your web site as known defect in our car's model and year. However they refused to acknowledge that. We ended up spending $2896.62 at the dealership shop to fix the engine problem. Considering that problem is a known defect as published on this web site. …”

   NHTSA complaint #10023788, filed 2003-06, 92,000 miles
2. 2
   Vehicle speed control

   Unintended acceleration with cruise control

   • 6 complaints (11%)
   • median 143,000 mi at 13.9 yrs old (3 state mileage, few)
   • 4 mention a crash, fire or injury
   • filed 1996–2010

   Owners describe the truck speeding up on its own, sometimes with the accelerator released, including while stopped at a light or on a freeway. Some say the cruise control would not disengage and that the brakes did not slow the truck. Some describe a crash after the brakes failed to stop the truck. Recorded mileage ranges from about 6,000 to 276,000 miles, and the incidents are described at speeds from a stop at a light to highway speed.

   What to check: Ask whether the throttle and cruise control system have been checked for faults, and confirm that the cruise control cancels when the brake is pressed. On a test drive, check that the accelerator pedal returns fully when released.

   2 excerpts from owner complaints in NHTSA records

   “On february 28, 2010, my 1992 Toyota 4RUNNER had a repeated accelerator issue. My truck accelerated several times while my foot was off the accelerator. I was stopped at a traffic light when the truck surged forward. I pressed on the brake with both feet and the accelerator continued to race. I watched the tachometer go from 1.1k RPM to 4k RPM without touching the accelerator. This happened over and over again over a 1/2 mile stretch of city blocks (el cajon blvd in san diego, ca). …”

   NHTSA complaint #10315549, filed 2010-03, 143,000 miles

   “My husband, stanley w. Sirnik bought a 1992 Toyota 4-runner. He only had it for two weeks when he decided to travel to west virginia. Stanley, my brother -in-law and my young son was coming back from shopping the next day. Stanley put the truck into cruise control at 40 MPH. He was traveling along at 40 MPH when all of sudden the truck started to accelerate up to a very high speed. He tried to take it out of cruise control but he could not. He applied the brakes, but the brakes would not work. …”

   NHTSA complaint #10121117, filed 2005-05, 6,000 miles
3. 3
   Brakes

   Brake pedal sinks or brakes fail to stop

   • 14 complaints (26%)
   • median 74,500 mi at 9.4 yrs old (2 state mileage, few)
   • 3 mention a crash, fire or injury
   • filed 1995–2010

   Owners describe the brake pedal going to the floor, with the truck taking longer to stop. In some complaints a corroded or rotted brake line was found leaking fluid, and a dealer was notified. Other complaints describe brakes that did not slow the truck during a sudden acceleration event. Mileage is stated only in a sudden acceleration complaint at about 6,000 miles, and the pedal reports are described at everyday speeds, including about 35 mph.

   What to check: Ask for the brake line and fluid inspection history, and check the brake lines underneath for rust, corrosion, or leaks before buying. On a test drive, confirm the pedal stays firm under repeated braking.

   2 excerpts from owner complaints in NHTSA records

   “A 1992 Toyota 4-runner was purchased and we only had it for two weeks. The truck was driven to west virginia. The next day the truck suddenly accelerated at a high speed and when the brakes were applied it would not stop. It crashed and flipped over. My husband died in that truck. There was a law suite but it never went to court after five years. My lawyers gave up. Toyota never settled with me and only said it was driver error. The engineer who was on the case said there was a design defect but they could not prove it. …”

   NHTSA complaint #10304888, filed 2010-02

   “While driving at 35 MPH applied brakes and pedal went down to the floor. It took longer for vehicle to stop. Consumer stopped the vehicle on the parking lot, went under the vehicle, and discovered a corroded brake line that was leaking fluid. Dealer notified.”

   NHTSA complaint #10080125, filed 2004-06

Buying note. Ask for records showing whether the head gasket campaign or an earlier gasket repair was done, and check for coolant loss or milky oil before buying. On a test drive, check the brake pedal feel and whether the cruise control cancels when the brake is pressed.

Summary written with AI from a sample of 29 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.