FIFTH GEAR STARTED MAKING A LOUD WHIRRING SOUND AT HIGHWAY SPEED. STOPPED USING THE FIFTH GEAR IN FEAR OF FAILURE AT HIGHWAY SPEED. AFTER 6-7 MONTHS THIRD GEAR STARTED POPPING OUT WHILE ACCELERATING THROUGH GEARS. HAD THE TRUCK LOOKED, AND WAS TOLD BY THE GARAGE THAT SPECIALIZES IN TOYOTA VEHICLES THAT TOYOTA PICKUPS FROM THE YEARS 1989 TO 1991 WERE NOTORIOUS FOR THIS PROBLEM. I WENT BACK TO TALK TO THE MECHANIC AND WAS ASKED WHAT IT WAS DOING. I HAD STARTED TELLING HIM ABOUT THE FIFTH GEAR NOISE WHEN HE INTERRUPTED ME AND ASKED IF THIRD GEAR WAS GIVING ME PROBLEMS TOO. I TOLD HIM YES. HE ASKED IF IT WOULD EVEN STAY IN GEAR ANYMORE,, AND I TOLD HIM NO, WHICH INDEED WAS THE PROBLEM. THE TRANSMISSION HAD TO BE COMPLETELY REBUILT AT A COST OF $1, *AK