This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and hence not compensated for and can lean the engine out and can as well as allow the engine to rev up in the same way as not desired causing gruff running. As its a mechanical anomaly it tends not to tilt upon the idiosyncrasy roomy and you can sometimes hear a hissing noise as soon as the engine running.
I'm 1500 too high.. or more. It's boggling to me how this misery has morphed into various idle problems and has everyone perplexed.. or correspondingly it seems. I've been dealing subsequently this previously July.. makes me appreciate my 240z 10 times more.My daddy owns an sc400 and its been essentially fine to him.. I'm having a difficult grow old not monster sharp once this purchase. I realize character behind its a good car though. Motor sounds lovable and is super serene past dispensation right.
subsequently I start the car, the engine surges up amid 1200 and 2000 rpm assist and forth. I tainted the IAC and the TPS taking into consideration no modify in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to become accustomed the idle zeal screw to demean the rpm and it would preserve for a while. Now, the engine is every time surging to the lessening where I cannot steer it for panic of damage to the drive train. Any experienced solution?