ve a vaccume leak or your tps is not set proper. Try them first.
Hey
I have a 4age in my ke70 and it idles high and when it warms up it revs up and down constantly inbetween 1k and 2k rpm. I unplug the map sensor and it idles high but not up and down anymore. I have tried a new map sensor still didnt work. Does anyone have any ideas? much appreciated
Mick
I had a similar thing happen to mine.
If it is a bigport, once it gets up to temperature there is a fuel cut around 2000rpm for when the throttle is closed. if you drop the idle enough so that the warm idle is below this then it shouldn't do it.
Thanks for the replys i was thinking it was an air leak and the TPS has a mark on it so I would say previous owner messed with it. I will go out and have a sus.