hi ,im wondering if anyone,can help please,my car was in a rear end shunt,just bumper damage,luckily,but since this accident my car stalked ,rigth after i was shunted,so did a engine code test,and came back as code 24..idle control vlave,,just wonderign how can this happen from a rear shunt,car that hit me did hit rear exhaust box,as never had any problems with car ,ever,now engine management light is on,and idles very lumpy,but car still drives,and pulls,brill,any one any ideas?,would be gratefull