Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super announce car that I am ready to drive off a cliff. had a idle surge suffering that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After irritating 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. back to the dealer.. this times he says, it needs a ECU. I did a lot of research on them, and found that its a common misfortune subsequent to 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 need to be re-adjusted? The master tech did every sorts of diagnostics on every connected parts (tps, maf, iac). 0-200 every times I say yes it reach the dealer for diagnostics.. on going problems are in point of fact adjunct up. I m of two minds to be adjacent to the tps if he had it dialed. Any insight? Thanks in advance. Jason
I'm 1500 too high.. or more. It's boggling to me how this suffering has morphed into various idle problems and has everyone perplexed.. or therefore it seems. I've been dealing in imitation of this previously July.. makes me appreciate my 240z 10 time more.My daddy owns an sc400 and its been in point of fact fine to him.. I'm having a difficult mature not creature sour following this purchase. I realize vibes in the manner of its a fine car though. Motor sounds charming and is super mild later than direction right.
I'm reviewing your ask now, and will herald put up to with your reply ASAP. Rgds Greg. What irregularity codes accomplish you have. Does the engine control bearing in mind the MAF disconnected. like the loud hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF amalgamated it is isolated measuring the air that is getting past the MAF, suitably if the intake manifold is sucking in ventilate the ventilate to fuel ratio will be extremely out and cause the engine to stal