Idle surge after swapping throttle body

I recently swapped my 1993 throttle body to a 1990(?) Throttle due to the 1993 pouring gas everywhere. I got all the sensors hooked up and it does not want to idle. It's finicky on when it wants to run. When it does, the idle surges hard between 1,000 and 2,000 RPMs giving it a little gas. Keep in mind with the 1993 throttle body, I had a slight surge, maybe 300(+/-) averaging 700-800 RPMs. The idle is so extreme it sounds like it has a huge cam. Gas depressed it shuts off, with the exception of every once in a while it'll bog down to 500. That being said, it drives well as long as the RPMs never goes below 2,000. In gear if I try to drive around 2,000 RPMs it will jerk like its in a gear that to high. Now driving through town at 30 MPH (transmission in 4th gear) RPMs sit at 1,200-1,500 and doesn't surge. I'm stumped, any pointers or suggestions will be appreciated.