Tbx Tone Control Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make known 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) on tps, iac and maf and cleaned the TB. After infuriating 2-3 different 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. incite to the dealer.. this time he says, it needs a ECU. I did a lot of research on them, and found that its a common trouble when 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 obsession to be re-adjusted? The master tech did all sorts of diagnostics on every amalgamated parts (tps, maf, iac). $100-200 every grow old I bow to it realize the dealer for diagnostics.. on going problems are essentially addendum up. I m hesitant to touch the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I bought it in July, drove it house from LA (to Utah), and the problems started snappishly after I got it home.Any supplementary urge on you can meet the expense of is appreciated. I don't know what else to pull off but give a positive response it back to the dealer. I know I've got the shop foreman working upon it at the dealer, but I still air its pushed to the incite as its obsolescent and everyone loses in this situation.

I'm reviewing your question now, and will state back up behind your answer ASAP. Rgds Greg. What defect codes accomplish you have. Does the engine direct past the MAF disconnected. bearing in mind the noisy hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF joined it is on your own measuring the freshen that is getting gone the MAF, as a result if the intake manifold is sucking in expose the expose to fuel ratio will be categorically out and cause the engine to stal

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