Trailer Wiring Diagram 4 Pin Flat

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super announce car that I am ready to drive off a cliff. had a idle surge suffering that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After bothersome 2-3 alternative 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. put up to 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 misfortune once 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 every sorts of diagnostics on all partnered parts (tps, maf, iac). $100-200 all times I take on it accomplish the dealer for diagnostics.. on going problems are in point of fact adding together up. I m of two minds to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason


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I did re-check them tho. The master tech did extensive tests upon the let breathe flow meter and said it was good. taking into account I unplug it and rule the motor, the car runs harsh and at 850ish. I can on your own guess that my extra rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of every this. I don't think the tps has that much manage in the substitute of rpm though? I think it lonesome adjusts it nearly 1k..



I don't have any check engine lights unless I unplug the MAF sensor. in the same way as the MAF is plugged in next the car will stall unless I put my foot on the accelerator. There is then an intermittent popping hermetic coming at idle.



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