Whining from engine bay when accelerating

[cleong]

Hi guys recently I am hearing a whining sound coming from the engine bay when ever I press on the gas. The noise goes away once I lift off the gas but not right away there is a lag between when I lift off and the sound going away.

The whining is quite noticable above the engine noise especially at low speeds when pressing the gas.

I haven't located where it is coming from and was wondering if you guys had any ideas. I have a 99 with the 3.5 engine.

[jd-autotech]

check for a vacuum leak by spraying starting fluid around the engine while its running and if the idle picks up theres your leak

[bsansa]

Remember to use extreme caution when spraying anything flammable around a hot engine bay.

Have you noticed any drivability issues such as shifting, hesitation, etc. Also, check your tensioner pulley or belt.

[dosintrigued]

Check to see if the power steering reservoir is low.

[cleong]

As far as drivability is concern it is driving just fine.

I will check the power steering fluod levels. Why would this cause a whining during acceleration?