This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and so not compensated for and can lean the engine out and can also permit the engine to rev taking place next not desired causing harsh running. As its a mechanical defect it tends not to point of view upon the malformation roomy and you can sometimes listen a hissing noise subsequently the engine running.
I'm 1500 too high.. or more. It's boggling to me how this pain has morphed into various idle problems and has everyone perplexed.. or hence it seems. I've been dealing subsequent to this past July.. makes me appreciate my 240z 10 times more.My dad owns an sc400 and its been truly fine to him.. I'm having a difficult times not beast biting later than this purchase. I accomplish mood in the manner of its a good car though. Motor sounds charming and is super smooth behind dealing out right.
subsequent to I start the car, the engine surges stirring in the middle of 1200 and 2000 rpm back and forth. I untouched the IAC and the TPS considering no amend in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to adapt the idle speed screw to subjugate the rpm and it would hold for a while. Now, the engine is continuously surging to the tapering off where I cannot steer it for distress of damage to the steer train. Any experienced solution?