my 1999 renault scenic 1.4 starts and drives but pulling out of junction going into second gear it loses all power but doesnt cut out if i keep applying gas it makes a thud and continues as normal it has just passed emissions for mot and doesnt have any problems when at 50/60/70 mph when the engines under full load i have changed the fuel filter and changed the plugs but this has made no difference, i have noticed however that when the fuel is low it happens alot more it has lost power and completely cut out a couple of times but starts back up straight away

andy7109, March 2012