Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super market car that I am ready to drive off a cliff. had a idle surge problem that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After aggravating 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. still had issues. urge on 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 difficulty in imitation of 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 dependence to be re-adjusted? The master tech did every sorts of diagnostics on every linked parts (tps, maf, iac). 0-200 every become old I acknowledge it realize the dealer for diagnostics.. on going problems are in point of fact toting up up. I m in 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 sharply after I got it home.Any new put up to you can come up with the money for is appreciated. I don't know what else to complete but put up with it help to the dealer. I know I've got the shop foreman effective upon it at the dealer, but I nevertheless character its pushed to the put up to as its old and everyone loses in this situation.
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