1990 rx7 s5.
I know rotories have a "dipping" idle...even the stock ones don't idle real smooth, its like they fluctuate +/- 100 rpms at idle....
could be wrong, but thats the way I've seen most of them running..
anyway, so the idle I'm trying to fix dips down so far that the car damn near stalls. First thing in the morning, it will stall. The rest of the day, it just gets really really really close. Its gotten worse and worse. It used to just do it sometimes. hell, some days it wouldn't do it at all, but over the past few months, its gotten worse. Now, it is an everytime type of thing.
any ideas as to what is causing it?

it seems to run "better" with the TPS unplugged. I'm pretty sure it is just seeming like it runs better because it is dumping more gas, just like any other car, Right?
It also doesn't seem to have the nuts that it used to. I remember this car used to just scream down the interstate, it really took off once you got much over 50... I don't know if it is because the other cars I deal with have gotten faster, or if this one has just lost its nuts....
I don't know if those two issues are related, but maybe...

let me know if you need to know anything else about the car.
thanks