I have the following symptoms:- after third gear, car revs up like is in neutral. Changing gears manually or reducing speed for the car to automatically select gear 1, solves the issue- sometimes revs up and down quickly like it's slipping then catching, then slipping again.- some other times revs stay fixed while vehicle speed increases.All this happens if accelerator is pressed moderately. If I drive in manual mode and keep the rpm between 2000 and 3000 , all works fine. Also drives fine if driving on auto in such a way that rpm stay above 2000. I tested the solenoids at the computer connector:- those which need to have 5-5.6 ohm have around 7 ohm (SL1, SL2, SLU, SLT); except SLU (which makes operating noise on connect) all make operating noise on disconnect.- those which need to have 11-15 ohm have 15.3 (S1, S2,S3), except S4 which has 13.7 ohm. All make operating sound on connect and disconnect. While writing, this i hoped this could be just an oxidized ground, but the SLT category solenoids have both + and - coming to the computer.SLT has 1.4 -2 ohms more, meaning 0.7 - 1 ohm per wire.0.25 mm cable to have 1 ohms need 2.5 meters. 0.5 mm cable need 11.5 meters. So the deviation seems plausible. Oil has been changed without modification of the symptoms.Stall test returned normal results(because of brakes could test only in reverse)Hidraulic pressure measured to be in specs (only reverse and idle tested properly)Torque converter engages without noticeable lag (hard to stopwatch the engagement time), makes no noises, lockup works over 80km/h Where i live, automatic gearboxes are alien tech and people just replace the faulty transmission with used ones or replace everything inside without doing diagnostics.In this order , I'm looking to:- have a working transmission- properly diagnosed and fixed- gain some knowledge myself so I can share the knowledge about the alien technology. Did I miss something? Is there any fault in my debug? Is there another forum better suited for this question?Next step would be to check the valve body.Any experience or feedback is welcome.