drove for half hour and still stiff. and it wont return all the way. i thought it was only doing this because it is cold out (michigan weather) but engine was at normal temps. any suggestions? oh and idk if this is of help but in the mornin when is super cold ill turn on the engine and something will make a whining noise and when i turn the wheel back and forth it will stop immediatly.

 

have you checked your power steering level? Any leakage under the truck?

 

no leaks. levels are fine. its so frustrating :/

 

Bad power steering pump?

 

was thinking this myself but is there a way to test it or what to look for before i pull it off and replce it.

 

Maybe try a flush with new fluid first. Royal Purple even makes a power steering fluid.

 

I had the same problem a month er so ago. https://www.f150forum.com/f4/07-powe...ng-out-187702/ it ended up being the pump there is a way to test it cuz it was under warranty so I just brought it there and at first they thought it was the shaft but then they tested the pump somehow and found it was weak

 

Ford uses Mercon ATF for power steering.

I had the same problem using the search a lot of people have said to oil the knuckle on the steering shaft.

 

Ahh that's right forgot about that! Wonder if you could use a PS fluid? Or just stick to some full synthetic ATF.

 

I would bet money that its the steering shaft binding if its not returning to center and there are no other pump related symptoms. You do not want to replace the pump and end up with the same problem (ask me how I know).