If there is no evidence of a restricted exhaust, it can
be assumed that the torque converter's stator clutch is
slipping and not allowing any torque multiplication to
take place in the converter To correct this problem, the
torque converter should be replaced.
If the engine's speed flares up during acceleration in
drive and does not have normal acceleration, the clutches
or bands in the transmission are slipping. This symptom
is similar to the slipping of a clutch in a manual
transmission. Often this problem is mistakenly blamed on the
torque converter.