My car won't turn over and start?

I went to go drive my car last night. It started up, but as I sat parked in the driveway it was idling rough (it felt like the engine was missing every few seconds). Then after about thirty seconds the car just shut off. Tried to restart and it wouldn't go. The engine cranks, but it won't turn over. Tried jumping it, no luck. Replaced the battery and the spark plugs already. Not sure what to check next. I'm driving a 99 Honda Accord ex 4 cylinder. Appreciate any help!

Added (1). Thank you, you're right I did mean that it won't fire up. I'll check out the ignition switch and main relay next.

Cranking means it's turning over. What you meant to say is that it won't fire up. Get a wiring diagram and check the ignition switch and main PGI relay. Both are known problems on Hondas.

You change the spark plugs but did you change the spark plug wire set. I changed my plugs once because it was missing and still had the same issue. Then changed the wire set, engine ran smooth again

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