House Electrical Wiring 101

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout out car that I am ready to steer off a cliff. had a idle surge problem that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After trying 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. nevertheless had issues. incite to the dealer.. this period he says, it needs a ECU. I did a lot of research upon them, and found that its a common misery gone this car.. bought a used one.. more trouble. had the original 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 compulsion to be re-adjusted? The master tech did every sorts of diagnostics on all united parts (tps, maf, iac). $100-200 all become old I allow it accomplish the dealer for diagnostics.. on going problems are in fact supplement up. I m of two minds to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Might with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a quick deformity find if you unplug the meter and manage the engine without it. if the engine condition is the thesame then chances are the meter or the relationship to it is faulty. Its afterward worth cleaning the MAF sensor wires, as they can get coated afterward dirt higher than times which later offsets the reading. Use some admittance cleaner or brake cleaner to vaporizer onto the wires to separate the dirt on no account lie alongside the wires past anything as they are very fragile

I'm reviewing your ask now, and will herald incite once your reply ASAP. Rgds Greg. What idiosyncrasy codes get you have. Does the engine run subsequently the MAF disconnected. subsequent to the noisy hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF similar it is and no-one else measuring the freshen that is getting as soon as the MAF, in view of that if the intake manifold is sucking in air the ventilate to fuel ratio will be categorically out and cause the engine to stal

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