I have the same issue.

I thought it was brakes rubbing or a slider problem so I changed rotors and pads and lubed up slider....problem remained.

then I thought it was a shock problem ...perhaps too long or too short...changed those out...problem remained.

I then thought it was contamination in the brake lines cuasing inner pads to rub...flushed all lines on all wheels and resivoir.........problem remained.


by happenstance I added some lubeguard power steering protectant/conditioner to my power steer resivor and the problem reduced dramatically. added a second bottle and the problem is almost gone..very little noise.

BUT...I think the lubeguard additive is just masking the problem....so final fix could be the power steering pump or the power steering box....im inclided to think its the pump....but we will see.

I also added an inline power steering filter (a motorcraft transmission filter ) in line to see if there were any particles cuasing the rumble...no change with the filter.

so my thoughts are the pump or the box.

if I change the box, going with a stock one...the oem one lasted 91K miles so no need to spend tripple the money for high end boxes.

let me know if you come up with any additional info.

 

Thanks for the info. Interesting...I never considered it may be a steering problem..

 

perhaps your power steering pump ? Flush powersteering fluid.

 

Double check all of your heat shields and muffler hangers, all of the way back. Tighten what you can. They can be just the slightest bit loose and cause noises only in certain situations.

 

I think this weekend I will park the truck in a position where I know the noise will happen and have my wife sit behind the wheel and create the noise while I am looking underneath.

 

turn steering to both extremes....changing rpm's

 

hearing noise when the steering is at its end of travel is normal.

 

The niose in question sounds like a plastic trash can lid being slid on the street open side down.

Very low tone rumble

not was he normal power steering eeechy eeechy sound

 

Just wondering if it has the auto lock hubs?

if so i noticed mine while in auto one side was clicking and making some noise....i took it off and greased it...


hope this helps

 

Yes I have the auto locking hubs.

 

May want to try that....i jacked mine up spun the wheel a few times....like others i thought it was a break making noise. And it wouldn’t make it all the time......i moved the steering wheel to the left, spun tire, to the right, and then pulled the auto lock, then spun tire and noise went away.....so i greased her up.....no more noise

hope this helps

 

Same with mine. It made a slight grinding noise. When I did the ball joints I greased the hubs and checked the bearings. all good now.

 

How do I grease the hubs?

 

The outside bearing can be greased thru the abs hole on top of the hub.
The inside bearing can only be greased by taking off the hub. You'll see the bearing.