Car hard to Start,bad idle, and shuts off while driving?

I would lean toward a fuel pump, have you checked fuel presure? I was also thinking timing.....but with a new engine you would think it would be fine. I would clean the throttle body (use a rag soaked in cleaner, do not spray it directly into the throttle body) The set the base idle speed: Clean the throttle body. Bring the engine up to operating temperature. Check and be sure the base timing is set correctly. Shut off the engine. Ground the set timing connector. Also ground pin #10 in the diagnostic connector. Start the engine and check the idle engine speed. It should be 750 RPM, + or - 50 RPM on non turbo engines and 800 RPM, + or - 50 RPM on turbo engines. If not, adjust as necessary using the adjustment screw located on the top of the throttle body. It is usually covered with a rubber plug. Remove the plug to adjust, then reinstall it when finished. Shut off the engine and remove the jumper wires. Base idle speed is now set.