I just install a new (used) 4R70W transmission in my 1998 F-150 4.6 2WD truck and now I hear a rattling noise coming from the transmission area. It sounds like the torque converter bolts are hitting the block plate. It's loudest when I put it in reverse. The transmission is working fine otherwise; no shuttering and shifting problems.

Any ideas would be much appreciated! This was my first time ever installing a transmission and want to make sure I didn't overlook the obvious.

 

possibly the torque converter hitting the inspection cover.

 

Thanks - I'll get a chance to look at it tonight or tomorrow.