[Mr. Pockets]

Please post threads in the appropriate forum. This belongs in Tech Q&A.

Speedracer, something very similar happened to my transmission. I had it flushed, had the internal screen replaced, and it worked fine...

...for about a week. Then I had to replace the transmission.

It sounds to me like you have a similar hydraulic pressure problem. The transmission isn't able to apply the pressure necessary to keep gears engaged. So, as you're driving along at 4k rpm, the clutches are slipping constantly, burning themselves and the fluid while they're at it.

Even if your pressure problem could be solved, I think it's likely that you've done irreparable harm to your transmission. Besides, without any kind of trouble code being reported by your TCU, that pressure problem is likely caused by a blockage. And where do you think the stuff causing the blockage came from? Your clutches.