SHELBY GT 350 Member
Joined: Sep 2010
Location: see user name
To check the fluid, once you have the top well vinyl thingy out of the way so you can see the motor (which is directly behind the seat, btw), pull up firmly on the motor to unsnap it from it's base (it's held there by four rubber plugs) you will see a black rubber plug on the side of the motor. Tilt the motor so the side with the plug is facing up toward you and remove the plug.
Have a rag or two handy in case a little spills. The easiest way I improvised to fill it was, I bought a little $5 thing of household multi-purpose oil that has that telescoping zoom-spout. All I needed was the container so I dumped the oil and filled it with Mercon. Reason for all of this is because the fill hole on the motor is only about 1/4"-3/8", so you'll need something small to fit in there to fill with. I thought about using a turkey baster, but I had already pissed my wife off previously for stealing one for another automotive project.
I don't know if there's an official fill level, I just put as much as I could before it started spilling out and then replaced the plug and it's been cool. Run the top up and down a few times to bleed any air out of the system. By about the second trip up you should notice it working better and whining less and by the third it will be like nothing ever happened.
And +1 to Boominup's post. If the level is full or adding fluid doesn't help, and there are no signs of any leakage then it may be a bad pump motor.
2001 GT Convertible
All the usual bolt-on's /200 I6, C4
And a few Explorers too... 2008 4.0 XLT 4x2, 1996 XLT 5.0 4x2, 2003 Sport Trac XLT 4.0 4x4