Hi guys, I've got an 09 f350 6.4l and I had a loud annoying whining noise from steering pump when turning and braking, I read other threads and others said to do a fluid change in the hydroboost system, which I did, and it solved the problem and now it's been about a month and I have noticed the noise is starting to come back. So far it's not close to as loud but this is how it started before. Anyone have any ideas? Is this a sign my steering pump is on its way out?

Thanks for any help!

 

Most likely a pump starting to fail. Try flushing the system again, sometimes it takes a time or two.

 

K I'll try again see if it helps.

Thanks