The Renault Fluence engine starts and starts again in 10 seconds. At this, the engine is shaking, and the turns are jumping up and down. It starts to work correctly only after 10 minutes to idle. The problem is most likely due to poor gasoline (water availability). To get rid of water, you need to spill a 0.5 litre of pure alcohol that binds the water.
If the engine is three, and the CHECK ENGINE is still caught, you can try to drown it, then start it again. It is possible that the cause is more serious, for example, there is a gas leak somewhere. In this case, it is better to contact the service. It also happens that such problems occur after the candles are replaced by non-one (other manufacturers). After the state candles are installed, the problem disappears.