Electrical Control Wiring Diagrams

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super promote car that I am ready to steer off a cliff. had a idle surge burden that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After bothersome 2-3 swap used IAC s, I took it to the master tech at lexus. He said it was the IAC valve. He tried my used ones.. and finally a rebuilt one. nevertheless had issues. help to the dealer.. this times he says, it needs a ECU. I did a lot of research on them, and found that its a common suffering as soon as this car.. bought a used one.. more trouble. had the original one rebuilt by a specialist.. and that s where I am at now.. Put it in tonight and the car idles at 2k rpm. Does the TPS dependence to be re-adjusted? The master tech did every sorts of diagnostics upon every related parts (tps, maf, iac). $100-200 all era I acknowledge it attain the dealer for diagnostics.. upon going problems are really tallying up. I m in two minds to be next to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I started the car in the works this morning, it starts stirring and runs at 1750 and within a minute or appropriately climbs on top of 2500.. It is doling out mild though, just way later than it should be. I also checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it put up to to exactly where it was. No vacuum leak sounds and every associates verified. I tone good roughly them as I've been in there a bunch of times..

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