Wiring Diagram Start Stop Motor Control

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize car that I am ready to drive off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After bothersome 2-3 swap 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 grow old he says, it needs a ECU. I did a lot of research on them, and found that its a common misery bearing in mind 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 dependence to be re-adjusted? The master tech did all sorts of diagnostics upon all partnered parts (tps, maf, iac). $100-200 all time I say you will it accomplish the dealer for diagnostics.. on going problems are essentially supplement up. I m in two minds to touch the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Might next be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a fast deformity find if you unplug the meter and control the engine without it. if the engine condition is the same subsequently chances are the meter or the membership to it is faulty. Its next worth cleaning the MAF sensor wires, as they can get coated behind dirt beyond era which later offsets the reading. Use some edit cleaner or brake cleaner to spray onto the wires to separate the dirt upon no account lie alongside the wires bearing in mind all as they are totally fragile

Hello the TPS does have an effect on switching the car into idle mode as a result I'd suggest to make clear the throttle dish is 100% closed and not slightly grounded behind carbon. and after that familiarize the TPS as a result that the IDL glue is continuous to the E2 attach when the throttle is closed, and get into circuit once the throttle is just cracked. Don't make miserable roughly any voltages, the IDL admission is the really important one.

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