Auto rudder off in P3D, same behavior. Even with today's update from PMDG, the plane behaves exactly the same way. 

Just a little project to get the coffee infused blood into the last remaining brain cells. ☕ 😉 
I don't own the pmdg but the following lua does work on other aircraft, works quite well. It might be worth a try.
As a handicapped person I make things like this to adapt quite often.
Registered FSUIPC is required.
In a nutshell - if the aircraft is on the ground then send the aileron axis to the tiller axis.

-- © Roman Stoviak (spokes2112) 15NOV19

null = 100 -- user adjustable aileron null value, for joystick noise
pwr = 0
 
function steering_pwr (offset, value) -- assign on/off ground to a variable
	pwr = value	
end

function steering (offset, value)
	if math.abs(value) > null and pwr == 1 then -- aileron axis is ouside of null and plane is on ground
		value = value * -1 -- reverse the aileron value for proper tiller value
		ipc.control(64136, value) -- send the reversed aileron axis to steering tiller
	else if math.abs(value) < null or pwr == 0 then
		ipc.control(64136, 0) -- center the  steering tiller if not on the ground or inside of null zone
	end		
	end	
end

event.offset(0x366, "UW", "steering_pwr") -- detect on/off ground changes
event.offset(0xBB6, "SW", "steering") -- detect aileron axis changes

   

Thanks Roman. Where do I put this precisely? I don't see anything being commented out, are these completely new lines of code adding this functionality?

I also received a word that the auto rudder issue is officially recognized as a bug, but there's no fix for it yet. 

As much as I enjoy the new NGXu, the ground handling at low speed is horribly unrealistic.  I don’t use AutoR but I do use rudder pedals to steer,  and at low speeds the over-response of the rudder steering is a major buzzkill.  But get the speed up a bit and the behavior changes.  To me, that is a bug.

Cheers,  

1 hour ago, Drumcode said:

Thanks Roman. Where do I put this precisely? I don't see anything being commented out, are these completely new lines of code adding this functionality?

I also received a word that the auto rudder issue is officially recognized as a bug, but there's no fix for it yet. 

The code goes into a .lua file (i.e. "steering.lua") in the Modules subfolder of your main P3D folder.  You also need to invoke it, either globally or by-aircraft, in the fsuipc.ini file.

 

hello,

 

I start my preflight and go to the taxi but when i make a left turn the aircraft didnt do. very slow and did not use the rudder. I have only the saitek pro flight yoke systemand fly with auto rudder. in the fmc settings stay RUDDER but nothing works can anyone help me please...

Sorry for my (English)

 

Alper