Apple Plug Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super market car that I am ready to drive off a cliff. had a idle surge misery that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After frustrating 2-3 every other 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. encourage 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 trouble subsequently 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 craving to be re-adjusted? The master tech did every sorts of diagnostics on every combined parts (tps, maf, iac). $100-200 all era I believe it do the dealer for diagnostics.. on going problems are in fact addendum up. I m of two minds to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason


I did re-check them tho. The master tech did extensive tests on the let breathe flow meter and said it was good. following I unplug it and govern the motor, the car runs gruff and at 850ish. I can isolated guess that my new 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 govern in the different of rpm though? I think it unaccompanied adjusts it more or less 1k..

I'm reviewing your question now, and will reveal incite later than your answer ASAP. Rgds Greg. What oddity codes do you have. Does the engine manage when the MAF disconnected. bearing in mind the loud hissing sealed this could be your problem. This could be a large vacuum leak ,with the MAF linked it is and no-one else measuring the freshen that is getting in the same way as the MAF, thus if the intake manifold is sucking in let breathe the air to fuel ratio will be utterly out and cause the engine to stal

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