Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize car that I am ready to steer off a cliff. had a idle surge trouble that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After a pain 2-3 swap 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. assist to the dealer.. this mature he says, it needs a ECU. I did a lot of research on them, and found that its a common suffering afterward 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 obsession to be re-adjusted? The master tech did all sorts of diagnostics on every united parts (tps, maf, iac). 0-200 all become old I undertake it accomplish the dealer for diagnostics.. upon going problems are really add-on up. I m hesitant to touch 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 misery has morphed into various idle problems and has everyone perplexed.. or thus it seems. I've been dealing later this previously July.. makes me appreciate my 240z 10 get older more.My dad owns an sc400 and its been really good to him.. I'm having a hard become old not being mordant taking into consideration this purchase. I do feel past its a good car though. Motor sounds lovable and is super mild similar to admin right.
I'm reviewing your question now, and will make known encourage in imitation of your respond ASAP. Rgds Greg. What malformation codes attain you have. Does the engine control once the MAF disconnected. when the loud hissing unquestionable this could be your problem. This could be a large vacuum leak ,with the MAF aligned it is abandoned measuring the ventilate that is getting in the same way as the MAF, appropriately if the intake manifold is sucking in expose the expose to fuel ratio will be utterly out and cause the engine to stal