Whining noise only after warm up

[daabob77]

Hello all,

I have a 2000 Lincoln LS v8 60k. Recently I've noticed a whining noise towards the end of my drive sometimes..(always at the end, engine warmed up 20 miles driven or so.)

The whining follows the throttle, with pitch rising with acceleration and falling and stopping altogether at a stop. It sounds like it's coming from the front of the engine. The noise isn't always there so hard to pinpoint but I'm guessing it's a power steering or hydraulic fan component. It isn't always present, come and go.

Does anyone have a similar experience they can share, or any information or ideas?

Thanks in advance!!

 

[izzy]

Transmission.

 

[clubairth]

Remove the belt when it's whining and see if it changes the noise.
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[SteveOwens]

This rotation only noise might be the rear end generating a high frequency pitch. Does the pitch become louder ascending a hill under a heavy acceleration? I had this issue once with a remedy of a fluid change with Red Line Light Shock Proof gear oil including about 4 to 5 ounces of Nanotech Industrial Solutions IC-3110. Results were good with inaudible noise. You can use engine oil Additive AC-1000 as use in the power steering pump also.