Fiesta Zetec revving issue

[David Godfrey]

The better half's car has an issue when driving or stationary, when depressing accelerator pedal lightly all is good, anything other than lightly @ about 3K it appears to hit a wall and won't rev higher (if I take foot off and press lightly it revs fine) Had a quick look and nothing seems disconnected or out of place all liquids are good filter is clear as are intake pipes, anyone have any other things to check before I put it in to a garage? thanks

[David Godfrey]

neilesh86 said:

Does the engine actually rev but power not fed through or does it stop revving when it 'hits the wall'?

will not rev

[David Godfrey]

thanks all for replies, looks like I have a few things extra to check in the morning now, could I change the tps my self or does it need calibration? according to the service book the fuel filter was changed a few thousand miles ago, but suppose it could be sediment in the tank?, had a look arround in the bay before my initial post and the only dodgy connection I found was at the back of the engine block a grounding strip was corroded and just bouncing arround, I have fixed that.