Recently bought a 2011 Ford transit connect. Went out to start it today and it cranked and started but stalled after only a couple seconds. Tried to restart it and it won't crank over with the key. Battery is new and has a good charge. Jumped the starter out and it spins over fine but won't fire. Every once in awhile I can get it to try and crank but its only for a couple seconds. Battery connections are good and everything else has power.