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Poor acceleration; flares when starting off in D, D3, S, 2, 1, and R; stall speed low in D, 2, and 1

Probable cause(s)
  1. Shift solenoid valve D defective
  2. Torque converter one-way clutch defective
  3. Engine output low
  4. Torque converter clutch piston defective
  5. Lock-up shift valve defective
  • Check for a stored DTC, and check for loose connections.
  • Test the shift solenoid valve function with the HDS.
  • Inspect the O-rings, and check the shift solenoid valve for seizure.
  • Replace the torque converter assembly.
  • Check the lock-up shift valve in the regulator valve body for free movement, and check the valve spring for wear and damage.
  • Check the engine control system.