Torque converter unlocking when it shouldn't

[TA_Freak]

This is not really a tune issue because I had things dialed in perfectly until I sent the TA to the shop to rebuild the engine. The engine was not removed from the car and the transmission shouldn't have even been touched.

Whats happening - and I've seen a view threads here with the same symptoms, TC locks perfectly at the right speeds/throttle position. The problem is when the load is reduced it will unlock. I'm running a SDOS for what it's worth.

Why would / could this just suddenly happen?

[RDF1]

Not sure.
But im curious how they rebuilt the engine without taking it out of the car?

[TA_Freak]

Not sure.
But im curious how they rebuilt the engine without taking it out of the car?

They yanked the heads and sent them off. The oil pan was removed and I'm assuming the rod assemblies were pulled out from the top.

[TA_Freak]

How does one log transmission events?

[TA_Freak]

NM ... I found the channels.