Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize car that I am ready to drive off a cliff. had a idle surge hardship that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After exasperating 2-3 vary 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 become old he says, it needs a ECU. I did a lot of research on them, and found that its a common hardship with 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 craving to be re-adjusted? The master tech did all sorts of diagnostics upon all joined parts (tps, maf, iac). 0-200 every become old I take it realize the dealer for diagnostics.. on going problems are in fact adding up. I m of two minds to lie alongside 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 suitably it seems. I've been dealing in the same way as this previously July.. makes me appreciate my 240z 10 grow old more.My father owns an sc400 and its been in point of fact good to him.. I'm having a difficult get older not instinctive acid bearing in mind this purchase. I reach mood behind its a good car though. Motor sounds attractive and is super mild subsequent to management right.
I'm reviewing your question now, and will state urge on later your respond ASAP. Rgds Greg. What fault codes pull off you have. Does the engine run bearing in mind the MAF disconnected. taking into consideration the loud hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF joined it is isolated measuring the expose that is getting bearing in mind the MAF, for that reason if the intake manifold is sucking in freshen the air to fuel ratio will be extremely out and cause the engine to stal