Check the hose clips for tightness and inspect the trunking for any cracks or splits and then all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best pretension to locate a leak is to have the engine government and hot and after that spray lighter gas /propane or brake cleaner roughly each joint in turn. If the engine rev s stirring you ve found your leak.
I did re-check them tho. The master tech did extensive tests on the air flow meter and said it was good. following I unplug it and manage the motor, the car runs rude and at 850ish. I can forlorn guess that my further rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of all this. I don't think the tps has that much rule in the rotate of rpm though? I think it unaided adjusts it roughly 1k..
past I begin the car, the engine surges up between 1200 and 2000 rpm help and forth. I misrepresented the IAC and the TPS taking into account no tweak in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to get used to the idle readiness screw to demean the rpm and it would withhold for a while. Now, the engine is for eternity surging to the reduction where I cannot steer it for radio alarm of broken to the steer train. Any experienced solution?