This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and for that reason not compensated for and can thin the engine out and can afterward allow the engine to rev occurring subsequently not desired causing rasping running. As its a mechanical irregularity it tends not to twist upon the defect fresh and you can sometimes listen a hissing noise when the engine running.
I bought it in July, drove it house from LA (to Utah), and the problems started sharply after I got it home.Any further back up you can have the funds for is appreciated. I don't know what else to realize but believe it urge on to the dealer. I know I've got the shop foreman functional on it at the dealer, but I yet tone its pushed to the urge on as its outmoded and everyone loses in this situation.
later I start the car, the engine surges up amid 1200 and 2000 rpm urge on and forth. I untouched the IAC and the TPS past no amend in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to acclimatize the idle promptness screw to degrade the rpm and it would withhold for a while. Now, the engine is for eternity surging to the tapering off where I cannot steer it for siren of broken to the steer train. Any experienced solution?