Hi my car had a really bad misfire the other day turned out to be the coilpack gone so the garage replaced that and cured the problem but ive noticed that at around 1000 to 1500 revs the car stops itself like a slight misfire has anyone else had this prob after the coilpack has gone and does the ecu sort itself out?the spark plugs were changed a 1000 miles ago to denso ones so there shouldnt be a problem there.