Hi I've got a 98 Megane cabriolet 2.0 16v. Until recently the car was running fine. The other day the revs shot up whilst idling at a junction, U tried to pull away but the car stalled. The car restarted ok but again the revs were high and the car stalled when under load. Having checked the engine I found two breather hoses had come off. Once they were replaced the revs returned to normal but still the car stalled when I tried to pull away. It has been on a diagnostic machine but the mechanic said it returned a result of no code.Has anyone got any ideas?