Opel Vauxhall Vectra B model 1997 Gl 5d 1.6 Won't fire up .... Help please?

My car is Opel Vectra B model 1997 Gl 5d 1.6 and now it getting me mad because it has some troubles with engine check lamp that i asked about it before so i made a paper clip diagnose on it and it gave me 2 codes first is 0110 and it refer to Intake Air Temperature Sensor (ATS) and the other code is 115 and it refer to Engine Coolant Temperature Sensor so i got both changed but the problem now the car don't want to start at all i tried many times to check every thing but it looks like every thing is ok . When i start the car the engine roll and you hear it sound normal but it never fire up . I try over and over and charge the battery again and again but no respond . i changed the ignition wires and the main ignition unite but nothing happened all still the same . i put back old sensors and old ignition unite nothing happened too still turning but never fire up . Before i change any thing the car didn't start in the morning and it looks like it stopped forever so i started to change stuff and make paper clip test but nothing changed . so tell me where should i search please . The car have petrol oil and cooling fluid . most of sensors i checked them clips and cleaned them with cleaning spray but still wont fire up . it happened before but one of my friends dragged me and i started on the second gear then it worked till it stopped that morning 10 days ago and now nothing help . Any ideas ?? tell me where to check or where to start my research in my car .....
i appreciate any help from you all out there
Sameh