Surging

[GTP370]

Apologies if this has already been covered....

I’ve owned by 06 Zetec auto since new, and it’s travelled just over 45k.

In recent times I have noticed that the car is jumping from one gear to another when not appropriate. Mainly noticeable round 70km/h with either light throttle or even when off taking foot the gas. Down a gear, and jumps from 2000rpm to 4000rpm, then back to the lower gear. Like a surge.

Ultra Tune could not detect a fault reading the computer. And like normal when they took it for a spin did not get the issue.

Has anyone else experienced the same issue?