Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make public 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 infuriating 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. urge on to the dealer.. this epoch he says, it needs a ECU. I did a lot of research upon them, and found that its a common burden afterward 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 craving to be re-adjusted? The master tech did all sorts of diagnostics upon all linked parts (tps, maf, iac). 0-200 every times I say you will it attain the dealer for diagnostics.. on going problems are essentially accumulation up. I m undecided 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 rapidly after I got it home.Any extra urge on you can have the funds for is appreciated. I don't know what else to realize but admit it put up to to the dealer. I know I've got the shop foreman working upon it at the dealer, but I nevertheless atmosphere its pushed to the back up as its dated and everyone loses in this situation.
I don't have any check engine lights unless I unplug the MAF sensor. like the MAF is plugged in later the car will stall unless I put my foot on the accelerator. There is after that an intermittent popping solid coming at idle.