Cranks no start 2005 Murano

[Remy Helu]

My 2005 drove fine one day started to jerk and stop when left for few minutes it will start. I thought it was cathartic converter it fist the code tell me it is the crankshaft sensor so I changed it but nothing I checked the spark plugs all 3 in front no spark. Took it to "friends" shape no luck but this time I lost the code it shows no codes and back where I started.
I changed:
Battery, crankshaft sensor, camshaft sensor
All fuses are good.
Please help if you can.
Thank
Remy