Post by
commanderclif »
https://forums.nicoclub.com/commanderclif-u253561.html
Tue Sep 08, 2020 5:03 pm
Yesterday the Service Engine Soon light came on so I figured I'd finally be able to get a code which there was and it was a P0744 and then it said "A/T Torque Converter Clutch Solenoid Valve Function".
I've had an issue for a few years where I'd loose power to the transmission but ONLY after running the car at 70 MPH our higher for an extended period of time. No issues with regular city driving, but get on the highway for even like 20 minutes and when I'd get off an exit ramp, slow the vehicle, then RPMs from the engine would equate to MPH, there would be either little to no power in the transmission. I could pull over, shut the car off for as little as 3 minutes, and then resume driving in a much improved state, so a shut down and starting up seemed to make a difference.
Yesterday I was driving 140 miles. After about the first 20 at 70MPH, I had the issue. Pulled off the highway. Stopped the car for less than 5 minutes, started the car got back on the highway and then kept the cruise control set on 60 MPH for the remainder of the drive and not one problem the rest of the drive.
116,000 miles, CVT fluid was replaced at the dealer nearly 2 years ago and the problem existed before that. Didn't seem to improve after the change but the pitch of the sound made by the transmission was definitely improved by the fluid change that was a nice improvement.
Torque Converter easy to replace? That seem like the best first place to start? Hopefully not having to do a full transmission replacement.