rlsmithtech
New member
Howdy. I have a 2001 4Runner with Auto tranny. I have an issue under acceleration. Between 2300 and 2600 rpm in 2, 3, and fourth gears, I experience a fluctuating engine rpm that seems to clear itself if I get out of the gas and get back in it. I'm never at full throttle, unless I'm on the racetrack in my racecar, I see no need. The surging/hunting happens in spite of constant pedal pressure. I don't know much about auto trannys, but is there some kind of solenoid that engages/disengages the torque-converter from fluid drive to full contact that could be failing? I took it to the Toyota dealer and he changes plugs/wires, fuel filter. He thought it might be bad gas, but it's still happening three tanks later. Any suggestions what it might be? I brought it home and cleaned the air flow sensor and the k&N filter and changed the ATF fluid, but still no change.
