06 mustang 4.0 rpm dips at idol


New Member
So I have a 06 mustang 4.0 when ever I'm in gear or even park at idle the rpm will occasionally dip down also if I have the ac on it idles rough and rpm dips even more at idle especially if I turn the wheel I'm not sure what to do. It has new plugs wires coil throttle body including iac ect egr cleaned new EGR valve I even put new air intake manifold gaskets I don't see any vacuum leaks I'm stumped no codes thrown and according to my computer no missfire in any cylinders
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