35d Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make public car that I am ready to steer off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After aggravating 2-3 oscillate 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. yet had issues. urge on to the dealer.. this times he says, it needs a ECU. I did a lot of research upon them, and found that its a common suffering following 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 habit to be re-adjusted? The master tech did all sorts of diagnostics on every related parts (tps, maf, iac). $100-200 every mature I admit it do the dealer for diagnostics.. upon going problems are truly tallying up. I m unsure to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I started the car up this morning, it starts occurring and runs at 1750 and within a minute or thus climbs beyond 2500.. It is direction smooth though, just way later than it should be. I after that checked the throttle screw plate/return screw, intentionally turned it out and nothing changed. put it back to exactly where it was. No vacuum leak sounds and all links verified. I setting good not quite them as I've been in there a bunch of times..

I don't have any check engine lights unless I unplug the MAF sensor. bearing in mind the MAF is plugged in subsequently the car will stall unless I put my foot upon the accelerator. There is after that an intermittent popping sound coming at idle.

Image Schematics for 35d wiring diagram

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