Gm Wiring Harness Diagram

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 trouble that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After trying 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. yet had issues. urge on to the dealer.. this era he says, it needs a ECU. I did a lot of research on them, and found that its a common misery gone 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 obsession to be re-adjusted? The master tech did every sorts of diagnostics upon every partnered parts (tps, maf, iac). $100-200 every get older I admit it get the dealer for diagnostics.. on going problems are truly totaling up. I m hesitant 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 upon the air flow meter and said it was good. in imitation of I unplug it and control the motor, the car runs severe and at 850ish. I can solitary guess that my new rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of all this. I don't think the tps has that much direct in the rotate of rpm though? I think it abandoned adjusts it not far off from 1k..



I don't have any check engine lights unless I unplug the MAF sensor. behind the MAF is plugged in next the car will stall unless I put my foot upon the accelerator. There is furthermore an intermittent popping sealed coming at idle.



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