Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize car that I am ready to steer 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 irritating 2-3 oscillate 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. assist to the dealer.. this grow old he says, it needs a ECU. I did a lot of research upon them, and found that its a common misfortune subsequently this car.. bought a used one.. more trouble. had the indigenous 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 upon every related parts (tps, maf, iac). 0-200 all times I assume it do the dealer for diagnostics.. upon going problems are essentially supplement up. I m of two minds to touch the tps if he had it dialed. Any insight? Thanks in advance. Jason
I started the car in the works this morning, it starts in the works and runs at 1750 and within a minute or consequently climbs greater than 2500.. It is meting out serene though, just quirk progressive than it should be. I afterward 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 contacts verified. I quality good very nearly them as I've been in there a bunch of times..
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