Horrible acceleration stutter and misfire at idle. 2.0L

[91Bird5spd]

my 91 sunbird 5spd has a horrible misfire at idle and horrible stutter when accelerating and it also has weird idle speed changes. any help will be greatly appreciated!

 

[DanSavage]

Throttle position sensor

Measure with an ohmeter between the middle and either outside pins as you are moving the throttle plate the reading should sweep evenly between either end if not replace the TPS.