I replaced the IAC, Head Temp sensor, had it on the dyno and tuned. two dealers cant find problem - After getting warmed up motor stalls but runs fine after restart for another 15 min and than stalls on coming to a stop or light. Start right back up with no issues.
Seems it o ly does it when it gets up to operating temp. Any help is very appreciated. Dealers don't know what is wrong. they both want to put in a new ECU for 350 bucks

 

What all did the dealers look at ?

 

They looked at everything they said from the idle sensor and the computer map range settings to full system test. they did see some faults but it was related to the IAC, replaced and did nothing. they also replaced the fuel pump and pressure regulator, still nothing

 

Grounds,swithes,loose fuse ? bad battery ?

 

Did you pull the codes?