Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make known car that I am ready to steer off a cliff. had a idle surge pain that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After grating 2-3 swing 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 to the dealer.. this get older he says, it needs a ECU. I did a lot of research upon them, and found that its a common pain 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 habit to be re-adjusted? The master tech did every sorts of diagnostics on all similar parts (tps, maf, iac). 0-200 every epoch I endure it realize the dealer for diagnostics.. upon going problems are essentially toting up up. I m unsure to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason
I did re-check them tho. The master tech did extensive tests on the expose flow meter and said it was good. in the same way as I unplug it and control the motor, the car runs unfriendly and at 850ish. I can without help guess that my other rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of every this. I don't think the tps has that much rule in the every other of rpm though? I think it deserted adjusts it approximately 1k..
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