Quote Originally Posted by NissanGQ4.2 View Post
Should not be the TC as you have fitted a reconditioned one.

When you got the new valve body, did you also get new solenoids or did you use your old ones?
I was told by wholesale autos that a failing lockup solenoid was super rare and that it would be all good, so I assume they didn't change it.

Everything is brand new except for the solenoid for the lockup TC. So I'm thinking it must be that.

It can only be the lockup solenoid, speed sensor, some damaged wiring, or a faulty tcu.
The vehicle behaves as it should for the first half hour or so if driving.
If I go straight onto a highway I can drive for more than an hour without the problem happening. Then if I stop for 10 mins or so, when I get back on the highway, as soon as I get to 90k/h it starts playing up! So what ever is broken will work for a while then start failing. I thought it would have to be temperature related as nothing else changes while driving.

tappin it