If I drive my 2004 Concorde 2 - 3 miles, then try to start it an hour later, it will turn over, but not start. If I try over 90 minutes later, it starts, no problem.
If I drive it longer distance until the engine warms up more it will start without waiting.

The mechanic installed a new fuel pump. That made no difference. Then changed the cam sensor and serviced the fuel injectors. Still have the same problem.

Otherwise, the car runs fine and have no engine light, and nothing shows up on the diagnostic computer.

I have spent close to $1,000 to try to find the problem. Any idea's would be greatly appreciated.

 

Hate to tell you to throw more parts at it but have seen more than a few of these issues. If you have no codes or other symptoms change the crankshaft sensor. Use only OEM cam and crank sensors. Aftermarket ones do not last more than a year in these cars.

 

Firem is right about this.if the crank sensor is bad when hot toe computer does not know you are trying to start the engine thus no code.

 

The problem turned out to be the anti theft system. If I used the remote control to lock or unlock the doors, that's when the problem develops. If I only use the key, it starts, no problem.