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Mine turned out to be due to a bad wire. Replaced that and runs worlds better. I’m appreciating that RonD, got me thinking in right direction. (To easy to assume new is good or part really is the correct one just cause computer said it is)

Thanks for info... it does not stay at high idle when cold very rough when driving; the new iac and ect sensor unfortunately were part store brands ect. not motorcraft... I will check the voltage on the ect...

Rebuilt engine, new pcm, Icm, egr valve, egr sensor, plugs, wires, coil packs, iac, maf, ect, iat, pcv. Fuel filter new, fuel pressure regulator is new. Cannot find any vacuum leaks. Runs fine after about ten minutes or so of driving, will idle fine after start up unless you you step on the...