Nissan Engine And Engine Cooling Engine Gasoline Turbo-charger

I have problem with my Nissan Frontier - it lost power and slowed down on the road. Took it to the dealer and have been told that comp cover was cracked and moisture got in to system. They changed computer - $2100. Dint help, went back, been told

I have a 2008 Versa hatchback manual, bought with 17K miles on the car. The car will often not start. Will hear 1-2 clicks, then silence for 4-5 seconds sometimes with a hard crank before it will start. Worrisome since sometimes it refuses to star

when i let my foot off the gas pedal and set the truck on neutral it shuts off also my check engine light juist turned on since the problem started??
200 nissan frontier 4 cyl 2.4
thank byou in advance

service engine soon light comes on does not flsh when happens fuel guage gos past the empty