st fluctuating idle, fluctuating idle Options

[rapid36]

hey guys my 94 celica st when hot or cold will fluctuate its idle. it will bounce up and down about 200 rpm and when listening to the exhaust it sounds like it misses every once in a while. i bought new spark plugs, spark plug wires, front o2 sensor, fuel filter, and i took out the throttle body and cleaned it all up. well mainly the butterfly i didn't try taking off the IACV and cleaning it. As a side note i do not have any check engine lights on, and yes it does work.

Any ideas on what it could be?

[VavAlephVav]

the other thing which I haven't tried yet, is get a usb to OBD2 cord on ebay, get OBD1 to OBD2 adapter if yours is <96. you can find the Toyota TIS software on bittorent, then use your laptop to get a good look at the system.
but my friend has one that works from a Bluetooth OBD2 plug to an App on his phone, idk which will work better or if it will do you much good with OBD1

And, have you replaced the ignition coil inside the distributor? maybe the insulation is breaking down and it leaks spark when you hit it hard.

This post has been edited by VavAlephVav: Oct 31, 2014 - 4:20 PM