Slow to crank ,but will fire right up after about tries.First and second try it will just turn over and over and will not fire .Is there a sensor that may cause this

The way the newer systems work the engine spins at least a few turns while the computer checks everything for correct readings. In the old days it was "cool" to be able to reach in and "bump" the key and have the car start. It meant you had the car tuned perfectly. Now the vehicle computer will not turn fuel on until it is happy with readings. One trick you can try is turn key to full on position and let it sit for a second or two before turning key the rest of the way to crank. This allows the system a second to do it's checking without wasting power cranking. Had Nissan that was just like this. Just wait a few beats before turn to full crank. You can also listen for fuel pump whine in that few seconds, and then hopefully whine to stop when pressure hits full. If whine never stops fuel pump may be getting weak. If you can get access to higher end code reader you can also check for "pending" codes that may be showing up sometimes (holding start up) but then working (so engine finally fires).

check fuel pressure should be 42 lbs. check filter if low some engines have 2 filters

I would suspect the fuel pump or maybe even the multiplug connection into the unit?

Are you sure about the "no fire'? Have you tried to jump start? Turning over slowly then slower is a sign the battery is low...check alternator and belt...If the "no fire" is present...it leans toward being the "crank position sensor"...Hope this helps.

Sounds like a crank sensor.

Probably the crank sensor, do you hear the fuel pump 'buzz' when you turn on the key (not cranking the engine, just key on)? If you do hear the fuel pump (only lasts about 2 seconds), it may be the ignition module, otherwise it is probably the crank sensor.

Have them Check the Timing sensor

You don't have a carberator on it, it's fuel injected. Id try spraying carb cleaner in the throttle while you have someone turn it over. If it fires up for a few seconds then dies then you might have a fuel pump problem or fuel filter clogged. If it still doesnt fire up then check if you have spark, if no spark see if your crank sensor is good and if your coil is getting power. If your coil is not getting power you might have a crank sensor problem. Try this and let me know if it helps.

it may be a bad crank sensor

most of the times when the car cut out it is cause by the crank angle sensor you wait for it to cool down and it will fire back up again, best way to check it is to take a bottle of water with you and try to locate (which is between the fire wall and the engine on the driver side on the engine block) where the crank angle sensor. when the car cuts out pour the water on the sensor to cool it down if the car then starts right away that is the problem.