480v Hvac Transformer Wiring Diagram

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 misfortune that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After trying 2-3 rotate 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. help to the dealer.. this times he says, it needs a ECU. I did a lot of research on them, and found that its a common misery when 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 obsession to be re-adjusted? The master tech did every sorts of diagnostics upon all joined parts (tps, maf, iac). $100-200 all mature I allow it pull off the dealer for diagnostics.. upon going problems are in point of fact toting up 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 along with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can pull off a fast malformation locate if you unplug the meter and manage the engine without it. if the engine condition is the thesame subsequently chances are the meter or the membership to it is faulty. Its as well as worth cleaning the MAF sensor wires, as they can get coated considering dirt exceeding grow old which later offsets the reading. Use some door cleaner or brake cleaner to spray can onto the wires to sever the dirt on no account be next to the wires gone anything as they are categorically fragile

have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you occurring to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms happening and is warmed up? oftentimes in engine pretense many factors may cause the thesame symptom(s)

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