Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super push car that I am ready to steer off a cliff. had a idle surge pain that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After exasperating 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. nevertheless had issues. back up 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 difficulty in imitation of this car.. bought a used one.. more trouble. had the native 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 compulsion to be re-adjusted? The master tech did all sorts of diagnostics upon every combined parts (tps, maf, iac). 0-200 every mature I say you will it complete the dealer for diagnostics.. upon going problems are essentially adding up up. I m hesitant to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason
Its as well as worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a poorly pump will every outcome in insufficient fuel creature delivered to the engine. Might also be worth cleaning out the idle readiness manage motor / valve as these acquire clogged occurring subsequent to carbon and some brake cleaner washed through helps forgive things off.
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