if the problem occurs after you park your car in the sun all day then come out to start it and the car cranks and cranks and cranks but does not start then the problem is with the main relay that powers the fuel pump and the engine ignition systems. The problem usually occurs because the interior temperatures in the car cause the circuit board in the relay to crack and break contact as it expands. when it cools down the circuit 'reconnects' and you can start the car.the relay itself is about $50 at a Honda dealer. You really can replace it yourself. The relay is up under the instrument panel to the left of the steering wheel. It is roughly behind the coin tray on the left side of the dashboard.the relay is usually grey in color but could be brown. It will have one bolt holding it in place on top and a connector on the bottom.if this sounds like your problem, buy the relay. If you're not confident about putting it in, find a local repair shop to put it in for you. They'll probably charge you $25 at most to install it.The relay is a very common problem on that model.hope that helps.