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