2003 ford taurus run then wont start back up

Next time it refuses to start check for fuel and spark. Also go to this link: https://www.2carpros.com/articles/car-cranks-but-wont-start

It is firing, no code came up either.

is it cranking ?

After about twenty minutes it will start. The starter is working.

When it is not starting check for spark on two plug wires at the spark plug boots. Use a spark tester or a screwdriver in the end of the spark plug boot. Hold the end near the handle about a quarter of an inch from a known good ground. When cranking there should be rapid sparks jumping the air gap. Check fuel psi and injector pulse. Hope this helps. Tell me the year and engine size with the 8th letter of the VIN number.

We had the exact same problem for a long time and of course the third and cheapest rout was what fixed it. A fuel injection idle air control valve that I got off eBay for roughly $30.00 was super easy to install and fixed it right up. The other two things we tried that did not help us but might help you if the other does not the most common response was that it was the ignition module. Not cheap, about $100.00 eBay, but real easy to put it. Last, a fuel pump. Cheap to buy, but we had to pay for someone to put it in and it was a real bummer when it did not fix the problem. Good luck!

Thanks, I will try the fuel injection idle control.

If the idle valve is not working you could press down on the gas pedal and see if it starts.