Cheaper Replacement For An Idle Speed Control Sensor

My '92 eclipse had a very bad idle. It would die or dip down below 500rpm when I was in nuetral. With a wholesale discount Mitsubishi wanted over $200 for the sensor. I got one from Hyundai for a '93 accent 1.8 motor and it bolted right up. Same part $140. Maybe there are other parts that are interchangeable that are cheaper...

maybe there are cheaper parts, but sometimes not the best idea

Since Hyundai uses mitsu engines, chances are its the correct part. And it does bolt up. I think that was some good thinking ;)