Check the hose clips for tightness and inspect the trunking for any cracks or splits and along with all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best pretension to locate a leak is to have the engine management and warm and then vaporizer lighter gas /propane or brake cleaner just about 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 upon the ventilate flow meter and said it was good. subsequently I unplug it and run the motor, the car runs rude and at 850ish. I can single-handedly guess that my supplementary rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of all this. I don't think the tps has that much govern in the substitute of rpm though? I think it forlorn adjusts it around 1k..
like I begin the car, the engine surges in the works surrounded by 1200 and 2000 rpm back up and forth. I tainted the IAC and the TPS similar to no alter in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to accustom yourself the idle quickness screw to lower the rpm and it would preserve for a while. Now, the engine is for all time surging to the lessening where I cannot steer it for agitation of damage to the drive train. Any experienced solution?