1990 nissan 240sx coupe, wont stay running

[240sxcoupe90]

hi. i have had my car for awhile now, and it runs strong for about 15-20 minutes, i can be reving the engine or just letting it sit, and then it bogs out and shuts off, then wont start for like a couple hours after. Where do i start?

[240sxcoupe90]

btw its a KA24de, 5 speed

[compactfean]

first check fuel pressure. If that's good check coolant temp sensor and tps sensor. And also check to see if your car runs with mafs disconnected.