This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and hence not compensated for and can thin the engine out and can plus allow the engine to rev up subsequent to not desired causing sharp running. As its a mechanical idiosyncrasy it tends not to twist on the deformity lively and you can sometimes hear a hissing noise later the engine running.
I'm 1500 too high.. or more. It's boggling to me how this difficulty has morphed into various idle problems and has everyone perplexed.. or therefore it seems. I've been dealing taking into consideration this before July.. makes me appreciate my 240z 10 era more.My father owns an sc400 and its been in point of fact good to him.. I'm having a difficult grow old not creature caustic considering this purchase. I realize environment bearing in mind its a fine car though. Motor sounds lovable and is super mild when doling out right.
in the manner of I start the car, the engine surges happening between 1200 and 2000 rpm back up and forth. I untouched the IAC and the TPS later no alter in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to familiarize the idle enthusiasm screw to degrade the rpm and it would hold for a while. Now, the engine is each time surging to the tapering off where I cannot drive it for alarm clock of damage to the steer train. Any experienced solution?