Hey guys, do any of u have this problem? After car is warm and only after driving at speeds around 50mph when I come to a stop or redlight it will have a slight misfire it seems once every 5 seconds or so. It will idle fine around 400-500 and then just a small hickup.. But when driving its perfectly fine and runs great..

 

Oh and also I did search for this issue on here and all I found was some newer is250 that has similar issues and they all said it was carbon build up.. Many said they did the seafoam in the vacuum lines and that helped.. Anyone have this issue on our 2Gs? Mine's a GS300