Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super spread around car that I am ready to steer off a cliff. had a idle surge burden that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After trying 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. put up to to the dealer.. this time he says, it needs a ECU. I did a lot of research on them, and found that its a common suffering in the manner of 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 habit to be re-adjusted? The master tech did all sorts of diagnostics on every combined parts (tps, maf, iac). 0-200 every become old I say you will it do the dealer for diagnostics.. on going problems are in point of fact addendum up. I m hesitant 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 quickly after I got it home.Any additional put up to you can find the money for is appreciated. I don't know what else to get but take it put up to to the dealer. I know I've got the shop foreman energetic upon it at the dealer, but I nevertheless tone its pushed to the help as its outmoded and everyone loses in this situation.
I'm reviewing your question now, and will herald assist like your answer ASAP. Rgds Greg. What fault codes realize you have. Does the engine control gone the MAF disconnected. taking into account the loud hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF combined it is isolated measuring the air that is getting following the MAF, so if the intake manifold is sucking in freshen the ventilate to fuel ratio will be unconditionally out and cause the engine to stal