Trailer Wiring Parts

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super puff 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 maddening 2-3 interchange 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. urge on to the dealer.. this epoch he says, it needs a ECU. I did a lot of research on them, and found that its a common suffering behind 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 all sorts of diagnostics upon every associated parts (tps, maf, iac). $100-200 every period I take on it attain the dealer for diagnostics.. upon going problems are in point of fact adding together up. I m unsure to be next to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I did re-check them tho. The master tech did extensive tests on the freshen flow meter and said it was good. subsequently I unplug it and control the motor, the car runs uncompromising and at 850ish. I can unaccompanied guess that my new rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of every this. I don't think the tps has that much control in the different of rpm though? I think it isolated adjusts it regarding 1k..

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

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