Thank you. That was a quick response. :-)
To clarify, I think that the sound itself is coming into passenger
compartment from the engine compartment. When I open up hood and try to
listen where it's coming from, it's hard to tell other than it seems to be
from right side of engine compartment, looking down from the front of GC,
since all other parts making sound at the same time. PS fluid is almost at
maximum line and relatively clean. The whistling noise sounded like air
leaking out or being sucked in with hood open.
Charlie did pass the time by typing:
The wheel is making a whistling sound?? or is it coming
from elsewhere. First thing I'd check is the PS fluid.
Thanks for trying to help me.
FYI, I went to a Jeep dealership and it turned out to be a power steering
pump somehow sucking in air. It will get replaced tomorrow under warranty.
Also, in trying to find what might be an issue, I came across the following
item on the Internet. Hope this helps for some other folks who might have
"Steering noise. Some owners of 2002-03 Grand Cherokees may complain about
an annoying moan or whine when they turn the steering wheel. Jeep says the
cause of the ruckus could be something as simple as contact between the
high-pressure and low-pressure lines at the steering gear. Repositioning the
lines is all it takes to quell the noise. To home in on the diagnosis, have
a buddy in the shop get in the vehicle while you get it up in the air. With
the engine running, have him turn the steering lock-to-lock while you listen
for the noise. If the noise is evident, focus on the two lines at the point
just above where they enter the steering gear. If it looks like they're
kissin' cousins, spray some engine degreaser on the connections to remove
dirt, road grime and other debris. Now loosen the lines and reposition them
so you have at least .125 inch of clearance between the two hoses. Tighten
the connections to 17 ft-lb, drop the truck and you're done with the
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