Fiesta 'y' Plate Turbo D Losing Power

[chris 1]

Hi

My little fiesta has had a strange intermittent problem over the last week or so.

It has dropped in power then picked straight back up a couple of times on acceleration, but tonight it went into a sort of limp mode and would not accelerate beyond about 30 mph. I pulled over and switched it off and back on again, and all seems fine again.

Even in the fault condition the engine runs and ticks over fine, but just revs low as if it had a limiter on it.

Has anyone ever had this sort of fault?

Do these cars use computers that may need reset?

Hope someone can help.

All the very best,

Chris.