[ps2cho]

so my 2008 E350 is grumbling and whining when turning the wheel when ambient temps are below 55F.

I changed the fluid at 110k have 147k now.

I’ve checked the PS fluid level and it’s full, no leaks, no bubbling or fluid movement with the cap off engine running.

when the engines warm it’s not as loud but still slightly audible.

is it time for a new PS pump or is it worth doing another fluid flush?

 

[nugent]

What fluid did you use? My experience is that generic fluids have too high viscosity at low temperatures, leading to the symptoms you describe.

 

[Legodude]

what's the condition of Belt and tensioner?

 

[ps2cho]

what's the condition of Belt and tensioner?

belt no cracks at all, both tensioner and belt replaced at 80k