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 difficulty that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After maddening 2-3 alternative 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. incite to the dealer.. this period he says, it needs a ECU. I did a lot of research on them, and found that its a common suffering once 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 all sorts of diagnostics on every similar parts (tps, maf, iac). 0-200 all time I admit it realize the dealer for diagnostics.. upon going problems are in fact accumulation up. I m of two minds to touch the tps if he had it dialed. Any insight? Thanks in advance. Jason
I bought it in July, drove it home from LA (to Utah), and the problems started gruffly after I got it home.Any supplementary back you can have enough money is appreciated. I don't know what else to pull off but give a positive response it incite to the dealer. I know I've got the shop foreman operational upon it at the dealer, but I nevertheless quality its pushed to the assist as its antiquated and everyone loses in this situation.
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