Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super broadcast 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) upon tps, iac and maf and cleaned the TB. After grating 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. yet had issues. urge on to the dealer.. this epoch he says, it needs a ECU. I did a lot of research upon them, and found that its a common burden gone 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 infatuation to be re-adjusted? The master tech did all sorts of diagnostics upon every partnered parts (tps, maf, iac). 0-200 every epoch I believe it attain the dealer for diagnostics.. on going problems are essentially additive up. I m undecided to be adjacent to the tps if he had it dialed. Any insight? Thanks in advance. Jason
I bought it in July, drove it house from LA (to Utah), and the problems started sharply after I got it home.Any further help you can present is appreciated. I don't know what else to get but endure it support to the dealer. I know I've got the shop foreman operational on it at the dealer, but I yet feel its pushed to the support as its outdated and everyone loses in this situation.
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