1.7 non turbo corsa b accelaration problem

[marshy52]

Hi when i go to put me foot down sometimes my corsa for some reason will not rev past 3500rpm sometimes i will get into higher revs and the cars speed will just come down to a certain speed and the revs will drop down to below 3000 then pick up again has anyone got any ideas thanks

[marshy52]

Hi again update checked me water bottle today cant remember the last time i checked it it was empty so topped it up took the car down the road and back and the water level stayed in the same place but it lost power again then went back to normal there no mayo or anything under the cap or in the dipstick but could it be a head gasket on the way out or something.

[PRICER]

no, sounds like some sort of sensor or something... im not that clued up on diesels

[marshy52]

thanks mate its going in the garage tommorow for a check over so they might be able to find the problem but we will see