Check the hose clips for tightness and examine the trunking for any cracks or splits and with every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best way to locate a leak is to have the engine management and hot and subsequently spray lighter gas /propane or brake cleaner nearly 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 freshen flow meter and said it was good. bearing in mind I unplug it and control the motor, the car runs harsh and at 850ish. I can abandoned guess that my supplementary rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of every this. I don't think the tps has that much rule in the different of rpm though? I think it abandoned adjusts it concerning 1k..
behind I begin the car, the engine surges in the works amongst 1200 and 2000 rpm incite and forth. I tainted the IAC and the TPS like no amend in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to familiarize the idle readiness screw to degrade the rpm and it would hold for a while. Now, the engine is for ever and a day surging to the narrowing where I cannot steer it for startle of damage to the drive train. Any experienced solution?