I have a 700R4 that seems to be knocking. When I start my truck I hear a
light knocking sound from the area of the torque converter. The noise is
there all of the time no matter what gear the transmission is in When
shifting from park to reverse the noise stops for about one second but that
is all. The noise does not get any louder when you rev the motor, however it
does get faster as the RPMs increase. With the truck on a rack you can hear
the noise coming from the torque converter. I have unbolted the torque
converter from the flywheel and then started the motor. There is no noise
with the torque converter unbolted from the flywheel. I have looked at the
flywheel and it does not seem to be cracked. Does anyone have any
information on this knocking sound?

                                           Thanks, Wayne