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I have a 06 SES ZX4, same foaming and whining, burped fluid out the cap, progressively worsening in the cold weather. After reading several blogs, found the Ford TSB 08-18-9, and looked at my reservoir O-rings. The outboard ring looked bad, inboard was visibly OK. Replaced both, fixed my problem (Oreilly Auto Parts). Another blogger said he found a filter in his reservoir, mine did not have one. Also, fluid is dark, will be flushing very soon. Car has 130K miles.
normally, the only part of your automatic transmission that will make a whining noise is the pump. it usually whines when iether the fluid is low or more commonly when the transmission oil filter is getting plugged up.
the power steering pump will also make a whining noise too.
turn the wheel all the way to the right and hold steady pressure against the stop. this puts maximum force on the power steering pump and, if the power steering pump is the one making the whine, it will change the sound of it. (usually louder).
if the trans pump is making the whine noise, it should sound different in neutral compared to drive. this test will really only work if it make the noise without the vehicle moving. if it wont do it at idle hold the rpms at 2000 or so.
if you decide the noise is coming from the transmission, and the transmission filter has not been replaced (assuming you installed a used transmission), replace the filter by removing the oil pan.
oh and also, if it is the power steering pump you should be able to make it make the whining noise while the vehicle is stationary. if it wont make noise unless its moving its not the power steering pump.
it may not be the pump its self it could be just the belt or the pulley, if it is whining. if its grinding then that would be more that the pump is faulty of it may have air in the system.
The power steering pump that is used in your car is notorious for noise issues, it is a loud whine which gets louder as you turn the steering wheel right or left, flush the system fluid and replace the pump.
the grinding noise you hear is the pump out of fluid you need to find and repair the leak then check the pump it may be u/s if no oil in it and it has been run
you have a power steering leak, when in full lock position the power steering pump is actually sucking in air and this is your noise. you will have to locate the leak and replace the leaking part and fill it to proper level.Ford will accept trans fluid for power steering fluid.
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