Chevy Ecm Wiring Diagram 1957 2006

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super broadcast 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) on tps, iac and maf and cleaned the TB. After grating 2-3 alternating 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. encourage 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 burden like 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 obsession to be re-adjusted? The master tech did every sorts of diagnostics upon all associated parts (tps, maf, iac). $100-200 every mature I believe it do the dealer for diagnostics.. upon going problems are in fact count up. I m unsure to touch 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 attain a fast malfunction find if you unplug the meter and govern the engine without it. if the engine condition is the same subsequently chances are the meter or the membership to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can acquire coated as soon as dirt higher than times which next offsets the reading. Use some gate cleaner or brake cleaner to spray can onto the wires to separate the dirt upon no account touch the wires subsequently whatever as they are unquestionably fragile

past I begin the car, the engine surges going on amongst 1200 and 2000 rpm urge on and forth. I untouched the IAC and the TPS when no fiddle with in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to acclimatize the idle keenness screw to lower the rpm and it would keep for a while. Now, the engine is constantly surging to the point where I cannot drive it for fear of broken to the drive train. Any experienced solution?

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