How to set the TPS, (throttle postion sensor)
You want the TPS voltage to be set under 1 volt. Setting it to .93 to .98 is good range and should be fine. The risk of a surging idle increases quickly the closer you get to 1 Volt.
Loosening the two bolts on top of the TPS, this will enable you to turn the sensor slightly left to right. This is how you adjust it. Now you will have to back probe the black wire (negative) and the green wire (positive) of the sensor with a multi-meter. In some cases the bolt holes of the TPS might need to be elongated to achieve the proper voltage reading.
Resetting the cars computer and idle relearn
Set your timing to where you want it, 10* is stock, advancing a little to 12*-14* might be good, withuot pinging.
Now reset the cars computer.
Do this by disconnection the battery for 20 minutes, with the headlight switch in the "on" postion. Turn off lights and reconnect battery, unplug IAC motor, and start the car. The motor may have a hard time starting and you may need to give it a little gas to stabilize the idle. Once the idle settles, adjust the idle stop screw between about 700-800 rpms. Now adjust the TPS voltage to .94v-.98v.
Shut car off. Plug IAC motor back in and start the car.
Let it idle for 2 minutes with all electrical accessories running.
Shut engine off for 2 minutes.
Let it idle again for 2 minutes with no accessories running.
What you are trying to do is get the computer to learn these new settings. By disconnecting the battery you erase previous settings, in preparation for the new setting you just made.