throttle?

[shimmy]

ok, so since Spa in May where the car went into limp mode late in the day and i had a throttle sensor replaced when i got back, my car has not been running quite right

basically at revs circa 2000-3500 the car will jump when carefully applying throttle

also if you let the car idle and then just apply very little throttle just to get it moving and hold it, the car revs will climb, then die, then climb alot higher without throttle movement. Not majorly noticable but doesnt feel right

ideas please from the CSL database!!!!