ok my 92 lumina died recently ran great 1 day no start the next. i have narrowed down my problem to either the crankshaft position sensor or the ECM. v.i.n is (T) 3.1 liter. i have no spark at the plugs fuel pressure is good. i do not believe i have the 24X ckp (crankshaft position sensor) sensor so does any one know where the hell the 3X ckp sensor is located on the engine. the shiton manual does not give a good discription of where the 3X ckp sensor is.oh yeah replaced all coils and the ICM.still no spark.