Check the hose clips for tightness and inspect the trunking for any cracks or splits and then every 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 meting out and warm and subsequently spray can lighter gas /propane or brake cleaner just about each joint in turn. If the engine rev s happening you ve found your leak.
I did re-check them tho. The master tech did extensive tests upon the expose flow meter and said it was good. taking into consideration I unplug it and control the motor, the car runs rough and at 850ish. I can forlorn guess that my extra rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of all this. I don't think the tps has that much govern in the swing of rpm though? I think it solitary adjusts it in relation to 1k..
following I start the car, the engine surges stirring between 1200 and 2000 rpm put up to and forth. I misused the IAC and the TPS once no bend in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to adjust the idle enthusiasm screw to demean the rpm and it would retain for a while. Now, the engine is at all times surging to the narrowing where I cannot steer it for radio alarm of damage to the drive train. Any experienced solution?