Hi everyone, can anyone please help? I have been given a corsa 1.2 trip 1996. I have just taxed and mot'd it. When driving along the motorway the car struggles to get past 60 mph until i hit a downwards hill. The engine management light flashes on for a second and the car loses power when goin up any kind of incline. I have just had the cambelt, water pump, thermostat, rollers etc replaced and the problem still hasn't gone. I have checked the plugs and leads and dissy cap and rotor arm seem fine. I have replaced the map sensor. I cant find any air mass meter as such only what is contained in the box on the throttle body.