I have a nissan sentra 2.0 2007 that stalls only when idelling on a decline, may start up..may not until it gets back on level surface.

SOURCE: stalling

tork converter is locking out see if you can unplug it as a quick fix it will be a round plug on the training should fix the problem but remember its only temporary as to you will lose overdrive and kill gas mileage by 5-6 miles a gallon but it wont damage anything

SOURCE: 92 nissan sentra Stalls while idling

I had this kind of problem on my car a couple of times. It can either be the idle control valve or overheating. you can clean the idle control valve or replace it. the one for my car was like $140 at the dealership.

SOURCE: 93 Nissan Sentra engine stalls

you need to replace the coil packs.

SOURCE: 2002 Nissan Sentra intermittant stalling no codes

Have a mechanic check it for vacuum leaks!

Good luck and be careful!

SOURCE: My 04 nissan sentra keeps stalling and dyiing..the

They usually can be changed in just a few minutes but the cost of the part is usually $60 - $100