2015 Forester 580 Valve Body / Toque Converter Solenoid Issues

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Having an issue where all the lights on the dash came on including AT temp light. The car started driving poorly we pulled over let cool got back home a few miles safely. Determined torque converter solenoid was bad had very high resistance around 50 ohms.

Replaced the torque converter solenoid with an aftermarket Ebay replacement that was correct spec 12.5 ohms. (I now also have a spare replacement as a bought 2)

Car drove ok for a few weeks. Fast forward the car is back to trying to lurch when stopped in drive, and does not accelerate rpms jumpy and doesnt seems like it’s shifting through gears properly only when warmed up, first 10 mins of driving cold everything feels and performs ok.

Its at 170k purchased at 33k and have never serviced the transmission fluid. Do you think we should start with transmission fluid level or just start by completely draining and refilling?

I ohmed out the solenoids back to grey wires at the outside of the valve body in an effort to not have to take everything apart again. I get the following readings cold

Grey - Orange 15.6
Grey - Purple 17.6
Grey - Green 19

Hot

Grey - Orange 19.5
Grey - Purple 21.5
Grey - Green 23

I would like to avoid swapping the solenoid again as it doesn't seem very far off from specs and seems to steadily increase in resistance as the vehicle warms up.

I am getting no check engine light or transmission lights in the dash and no stored codes with. Obd2 scanner.

Please advise on some direction here.

IMG_4199.jpeg
 

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