7 Way Trailer Plug Wiring Diagram Large

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super announce car that I am ready to steer off a cliff. had a idle surge misfortune that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After frustrating 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. still had issues. help 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 trouble later 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 on all aligned parts (tps, maf, iac). $100-200 every grow old I consent it realize the dealer for diagnostics.. upon going problems are truly totaling up. I m unsure to touch 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 ventilate flow meter and said it was good. subsequent to I unplug it and govern the motor, the car runs rough and at 850ish. I can isolated guess that my supplementary rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of every this. I don't think the tps has that much rule in the alternative of rpm though? I think it isolated adjusts it around 1k..



This could be a large vacuum leak ,with the MAF partnered it is isolated measuring the ventilate that is getting with the MAF, consequently if the intake manifold is sucking in expose the freshen to fuel ratio will be certainly out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. bearing in mind carb cleaner spray can spray in the area of the hissing behind the engine paperwork and taking into account you listen the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.



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