my renault megane scenic wont pick up speed especially in first and second gear .i have put new spark plugs in but still no change any help would be much appreciated

I am guessing that people will need a bit more info e.g is it petrol or diesel; engine size; year; approx mileage; auto or manual.

I hope you get sorted.

its petrol .auto..55 plate . about 65.000 mileage

suspect air flow meter

Does it have a turbo .if so it could be the turbo pipe broken loose or holed

no maf on it, map and iat.