the engine speed sensor should definately be the crank one. see below, may be useful? :S [lightbox=../../e107_files/public/1201303800_594_FT215604_camcrank.jpg][/lightbox] the crank sensor can be seen in red, and the cam one in green. you obviously know what it looks like, as you have changed it, so you have done the right one for sure. maybe it is worth doing both of them??