One problem related to engine shut off without warning has been reported for the 1998 Toyota Tacoma. The most recently reported issues are listed below.
After driving the truck at highway speeds, slow into traffic or lights, release the brake peddle and start to press the gas peddle and the vehicle shuts down. This was reproduced many times after driving over 2 hours, then unable to reproduce, several days later after driving 20 minutes on highway and into traffic, pulled up to an intersection, attempted to cross and the truck stalled in the middle of the intersection with heavy traffic. The Toyota dealer and Toyota of USA, have stated that they do not have an answer for this problem that has been reported by other truck and 4runner owners. The vehicle is not safe nor reliable to drive at slow nor high speeds due to total system failures.