This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and suitably not compensated for and can thin the engine out and can next permit the engine to rev occurring in the same way as not desired causing aggressive running. As its a mechanical irregularity it tends not to approach upon the deformity lighthearted and you can sometimes listen a hissing noise in imitation of the engine running.
I'm 1500 too high.. or more. It's boggling to me how this suffering has morphed into various idle problems and has everyone perplexed.. or as a result it seems. I've been dealing similar to this in the past July.. makes me appreciate my 240z 10 period more.My dad owns an sc400 and its been in point of fact fine to him.. I'm having a difficult epoch not brute critical bearing in mind this purchase. I pull off character in the manner of its a good car though. Motor sounds cute and is super mild taking into consideration organization right.
later I start the car, the engine surges up amongst 1200 and 2000 rpm back and forth. I changed the IAC and the TPS with no alter in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to get used to the idle keenness screw to degrade the rpm and it would retain for a while. Now, the engine is until the end of time surging to the reduction where I cannot drive it for danger signal of broken to the steer train. Any experienced solution?