Check the hose clips for tightness and examine the trunking for any cracks or splits and after that every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best habit to find a leak is to have the engine running and warm and later spray lighter gas /propane or brake cleaner approximately each joint in turn. If the engine rev s taking place you ve found your leak.
I did re-check them tho. The master tech did extensive tests on the freshen flow meter and said it was good. similar to I unplug it and manage the motor, the car runs coarse and at 850ish. I can only guess that my further 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 control in the substitute of rpm though? I think it forlorn adjusts it nearly 1k..
subsequent to I begin the car, the engine surges happening between 1200 and 2000 rpm back and forth. I distorted the IAC and the TPS later than no amend in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to adapt the idle zeal screw to belittle the rpm and it would retain for a while. Now, the engine is all the time surging to the lessening where I cannot drive it for frighten of damage to the steer train. Any experienced solution?