I've replaced both fuel pumps, lines and filters, the fuel pump relays, the EEC, IAC, map sensor, 02 sensors, cleaned out the EGR, tweaked the timing, and my truck still won't stay running at an idle. After coming to a stop or at a cold start, it acts like its not getting enough gas and chokes itself to a stall. No codes are being thrown, fuel pressure and oil pressure are great, but I'm at my wit's end. I would appreciate any suggestions because I'm completely stumped. Thanks guys

 

Does it stay running if you give it gas while idling?

 

Start check for vac leaks, even the hard lines.

 

when u pulled codes you should get a pass code on both koer and koeo (off)

 

Yes it does stay running if you give it gas quickly enough.