Hello, I have repaired over 30000 vehicles in my career and I obsession to question you questions in the past I am not there in person to hoard facts, data, or to test your vehicle. I may ask you to ham it up psychotherapy in my stead. If psychiatry is needed and you would rather not doing testing, I can give my best advice, Fuel pressure?
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a little more very nearly the problem history. It currently has a master tech approved idle freshen control valve and tps installed. without upsetting anything, the last (used) ecu and my original, would run in the car without this symptom.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms happening and is warmed up? oftentimes in engine perform many factors may cause the thesame symptom(s)