Check the hose clips for tightness and examine the trunking for any cracks or splits and in addition to every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best mannerism to find a leak is to have the engine executive and warm and later vaporizer lighter gas /propane or brake cleaner around each joint in turn. If the engine rev s occurring 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 sharp and at 850ish. I can on your own guess that my new 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 direct in the alternative of rpm though? I think it isolated adjusts it not far off from 1k..
when I begin the car, the engine surges going on surrounded by 1200 and 2000 rpm support and forth. I distorted the IAC and the TPS past no alter in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to become accustomed the idle swiftness screw to degrade the rpm and it would withhold for a while. Now, the engine is continually surging to the lessening where I cannot drive it for fright of damage to the steer train. Any experienced solution?