Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make public car that I am ready to steer 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 bothersome 2-3 every other 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. still had issues. put up to to the dealer.. this get older he says, it needs a ECU. I did a lot of research on them, and found that its a common misery subsequently 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 craving to be re-adjusted? The master tech did every sorts of diagnostics upon every similar parts (tps, maf, iac). $100-200 all time I receive it attain the dealer for diagnostics.. upon going problems are in fact addendum up. I m unsure to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason
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I started the car happening this morning, it starts stirring and runs at 1750 and within a minute or fittingly climbs on top of 2500.. It is direction mild though, just showing off cutting edge than it should be. I next checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it put up to to exactly where it was. No vacuum leak sounds and every friends verified. I vibes good just about them as I've been in there a bunch of times..
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