The car starts when cold but won't start again after it has been running (warm)

If the problem only happens when the engine is cold, a bad electric sensor is likely to blame. If the car stalls even when the engine is warm, the cause is likely a faulty electric fuel pump.

Why is it that my car starts but won't stay running? ' Reference.com

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This sounds like the temp sending unit for the ecm is bad. There are 2 temp sensors, 1 for the light/gauge and 1 for the ecm. The sensor sends a signal to the ecm to tell it engine temp, the ecm them adjusts fuel mixture for cold or warm engine.This works much the same way as the choke does on a carb for cold starts

First i would check the crank sensor by looking for rpm's on the tachometer or scan tool if you see any rpm's then crank sensor is good.Then check for leaking injectors and if they are not leaking then you will need to check the ECM it may have failed.

With the car warmed up and running, check the transmission fluid level. It may be low or needs flushed.

Then you have a start up problem and it reside with the cold start valve,The cold start valve operates even if the vehicle is warmed up,the cold start valve can be plugged up,or even have a bad connection,The cold start valve operates by a thermotime switch.This switch located on the near bottom of the radiator may have gone bad or disconnected,Here is the easy cost effective route, replace them both,it will cost more to trouble shoot it than just replace it.

Did you find a fix?
Same problem, wondering how you fixed it?

Sounds like you have the famous cam position failure.Dont rely on a code it wont give you any By the way does the idle roll and surge ? Then its definately your cam postion sensor

The next time it won't start check the fuel pressure you should have 48-55 psi with key on and engine off.

try the cold start sensor/ automatic choke

Adjust choke assembly. Good mechanic, 5-10 min.