I have had that happen a few times. With mine, it would not even crank; seemed to be the crankshaft position sensor (don't know why it matters about the crank position) Anyway, with the car in park, get out and rock the whole thing forward and back a couple times. It's worked for me. After installing a new battery I could not get Tweety to even crank; did that and it cranks now but not getting fuel, so no start. I'm trying to figure that one out; it ran with old battery but not now. I think the relay is working.