My Furnas model #C2E30A-1A will run occasionally, if I shut it off and on numerous times... when the burners start they only stay on maybe 10-15 seconds then goes totally out... it will keep trying several times before it just does nothing... what do I do? I'm capable of fixing it, if I know what part to get...

You need to start troubleshooting the system. No LED codes on the control panel? I'd start with a flame sensor or the rollout switch. Make sure all the burners are clean.