Hi Dave,
Just looking at the unit on the car and a scematic, it looks realy straight forward. Looks like the intake needs to be removed along with the powersteering res, just to make room. Once those are out of the way, it looks like the spring assembly and armature needs to be removed to get the unit out of the throttle body. My question is that once these are out of the way, there only looks to be a small face plate with one screw holding this into the throttle body whcih as this unit is under pressure, I find hard to believe. Since I don't have the new part in hand yet, the only thing I can think of is that it's possibly threaded. I would also think there has to be some kind of o-ring or at least a flange washer. Anyhow, let me know if I'm on the right track. It's cold in upstate NY this time of year and anything I can do to cut down the time under the hood is apprciated!