Mf 1130 Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super push car that I am ready to steer off a cliff. had a idle surge misfortune that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After irritating 2-3 vary 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. still had issues. back to the dealer.. this period he says, it needs a ECU. I did a lot of research on them, and found that its a common difficulty as soon as this car.. bought a used one.. more trouble. had the native 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 obsession to be re-adjusted? The master tech did all sorts of diagnostics on all associated parts (tps, maf, iac). $100-200 every times I give a positive response it accomplish the dealer for diagnostics.. on going problems are really totaling up. I m of two minds to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I started the car stirring this morning, it starts in the works and runs at 1750 and within a minute or appropriately climbs exceeding 2500.. It is dealing out mild though, just habit superior than it should be. I in addition to checked the throttle screw plate/return screw, on purpose turned it out and nothing changed. put it incite to exactly where it was. No vacuum leak sounds and every friends verified. I character good virtually them as I've been in there a bunch of times..

like I start the car, the engine surges in the works with 1200 and 2000 rpm urge on and forth. I distorted the IAC and the TPS afterward no fiddle with in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to accustom yourself the idle swiftness screw to degrade the rpm and it would retain for a while. Now, the engine is forever surging to the dwindling where I cannot steer it for distress of damage to the drive train. Any experienced solution?

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