Breaking down at 3000-3500 tom

[Patrol grub]

Sounds like your TPS( throttle position sensor) is stuffed. I had a similar issue with my old Patrol.
Your description is a bit different to mine where I would have no power early in the rpm range,
Spray some contact cleaner in your pedal tps and see if it makes any difference .
I had mine replaced under warranty

Thanks Nisshead just had this replaced in a recall had it done and passengers side air bag recall done thanks for you help mate. Waiting for scan gauge then will work from there.