This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and thus not compensated for and can thin the engine out and can as well as allow the engine to rev in the works following not desired causing harsh running. As its a mechanical anomaly it tends not to viewpoint upon the irregularity open and you can sometimes listen a hissing noise behind 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 consequently it seems. I've been dealing following this past July.. makes me appreciate my 240z 10 times more.My daddy owns an sc400 and its been truly good to him.. I'm having a difficult become old not being biting gone this purchase. I complete setting like its a good car though. Motor sounds gorgeous and is super serene next paperwork right.
I'm reviewing your ask now, and will say incite in imitation of your respond ASAP. Rgds Greg. What irregularity codes attain you have. Does the engine direct gone the MAF disconnected. afterward the loud hissing sealed this could be your problem. This could be a large vacuum leak ,with the MAF connected it is and no-one else measuring the ventilate that is getting like the MAF, suitably if the intake manifold is sucking in air the let breathe to fuel ratio will be entirely out and cause the engine to stal