here is the TPS adjust procedure [ http://z32.wikispaces.com/Throttle+Position+Sensor ] Even with the TPS set correctly idle will suddenly increase and hold also the IAA and AAC could also need service. [ http://300zx-twinturbo.com/cgi-bin/manual.cgi?list=efec&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=17&design=default&total=190 ] What I do to correct the idle is shut off engine then turn on key to start position with (do not start). Unplug the TPS for about 5 sec then replug. Turn off key then start engine and idle is back to normal until the next time it goes high.
Note after TPS adjustment do this procedure to reset the system.
ZUL8TR in Orlando,FL |