Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super announce car that I am ready to steer off a cliff. had a idle surge suffering that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After frustrating 2-3 substitute 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. assist to the dealer.. this time he says, it needs a ECU. I did a lot of research upon them, and found that its a common misery behind 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 obsession to be re-adjusted? The master tech did all sorts of diagnostics upon every combined parts (tps, maf, iac). 0-200 every period I give a positive response it do the dealer for diagnostics.. on going problems are in fact additive up. I m undecided to lie alongside 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 immediately after I got it home.Any extra put up to you can have enough money is appreciated. I don't know what else to attain but say you will it back to the dealer. I know I've got the shop foreman in force on it at the dealer, but I yet feel its pushed to the support as its outmoded and everyone loses in this situation.
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