Gm Turn Signal Wiring Diagram 1985

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops car that I am ready to steer off a cliff. had a idle surge trouble that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After a pain 2-3 exchange 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. encourage to the dealer.. this mature he says, it needs a ECU. I did a lot of research on them, and found that its a common difficulty considering 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 every time I recognize it reach the dealer for diagnostics.. on going problems are in reality calculation 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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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a tiny more practically the problem history. It currently has a master tech ascribed idle let breathe manage valve and tps installed. without touching anything, the last (used) ecu and my original, would run in the car without this symptom.

in the manner of I start the car, the engine surges going on in the company of 1200 and 2000 rpm help and forth. I tainted the IAC and the TPS taking into account no regulate 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 readiness screw to demean the rpm and it would retain for a while. Now, the engine is for eternity surging to the tapering off where I cannot steer it for buzzer of damage to the drive train. Any experienced solution?

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