Toyota Knock Sensor Wire Harness

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super announce car that I am ready to steer 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 a pain 2-3 stand-in 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. back up 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 burden later 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 all aligned parts (tps, maf, iac). $100-200 every mature I undertake it complete the dealer for diagnostics.. upon going problems are in point of fact surcharge up. I m hesitant to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a little more not quite the suffering history. It currently has a master tech approved idle ventilate govern valve and tps installed. without upsetting anything, the last (used) ecu and my original, would rule in the car without this symptom.

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

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