Computer problem
1997 Nissan Sentra 4 cyl Four Wheel Drive Automatic 120000 miles

I have a 1997 Nissan Sentra-In a hot weather do not turn on,Sometimes I open doors and it's start. In a morning or late evenibg it's start but when is hot weather do not start. some one told me IT IS a MAIn RELAY problem? this is right !!!. Please explain why it si not start? I will appriciate your early response. thanks Dinesh

Please note: It is a MAIN RELAY problem??

In a hot weather temp in interior wan't start but sometimes i open and start or take a time to sart -this kind of problem? please explain how to fix? thanks again.