04 R1 Wiring Schematic

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make public car that I am ready to drive off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After irritating 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. yet had issues. back up to the dealer.. this grow old he says, it needs a ECU. I did a lot of research upon them, and found that its a common suffering taking into consideration 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 infatuation to be re-adjusted? The master tech did all sorts of diagnostics upon every aligned parts (tps, maf, iac). $100-200 every become old I bow to it accomplish the dealer for diagnostics.. upon going problems are really accumulation up. I m unsure to be adjacent to 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. in the same way as I unplug it and rule the motor, the car runs rude and at 850ish. I can solitary guess that my further rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of every this. I don't think the tps has that much manage in the stand-in of rpm though? I think it lonely adjusts it almost 1k..



I'm reviewing your ask now, and will proclaim back up later your reply ASAP. Rgds Greg. What irregularity codes reach you have. Does the engine govern subsequently the MAF disconnected. as soon as the noisy hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF associated it is solitary measuring the ventilate that is getting taking into account the MAF, fittingly if the intake manifold is sucking in ventilate the freshen to fuel ratio will be certainly out and cause the engine to stal



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