Transmission issues 4r70w

Vagaso

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Joined
Jun 17, 2021
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Kansas City
For a while (few months) I had a weird sound at WOT that sounded like very quiet supercharger whine and couldn't find the culprit. Now I'm not able to go WOT or even half throttle to where it kicks down without rpms spiking to 5-6k rpm and me having to micromanage where in the throttle sweep I'm accelerating at. At the same time this happens I also get a whining noise similar to the sound before but much louder and worse. Casually driving I don't have any slipping on the transmission at all, just under more aggressive conditions.

I'm not very well versed in transmissions but someone mentioned the torque converter might be the issue? I know the lockups are weak as well. I'm more seeing if anyone has had this issue and what they found out.

Fluid is red, no brown and doesn't smell like it's burnt.
 

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