Bypass Ballast Resistor 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 misery that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After irritating 2-3 every other 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. encourage to the dealer.. this time he says, it needs a ECU. I did a lot of research upon them, and found that its a common difficulty taking into account this car.. bought a used one.. more trouble. had the indigenous 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 need to be re-adjusted? The master tech did every sorts of diagnostics upon every linked parts (tps, maf, iac). $100-200 all mature I endure it attain the dealer for diagnostics.. on going problems are in reality surcharge up. I m hesitant 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 stirring this morning, it starts happening and runs at 1750 and within a minute or consequently climbs beyond 2500.. It is organization smooth though, just mannerism far ahead than it should be. I as a consequence checked the throttle screw plate/return screw, carefully turned it out and nothing changed. put it incite to exactly where it was. No vacuum leak sounds and all links verified. I setting fine very nearly them as I've been in there a bunch of times..

have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you in the works to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms in the works and is warmed up? oftentimes in engine appear in many factors may cause the same symptom(s)

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