My bad about the spelling. Anyway that flap should drop easily with one finger with no bind and come back up to resting position with some resistance. The test for this sensor goes like this:
Pull off the plug enough were you can up hook up your leads from the multimeter (engine off)
Terminal 1 to 3 4.6-5.1 volts
Start engine terminal 1 to 2 should read .57-.81 volts at idle

Terminal 1 is on the top of the plug terminal 2 middle and 3 is the bottom.

If your car has fault readings it should show 10 percent when you measure the cars lambda reading if its bad. Have you checked to see if the x11 jack is throwning any codes?