Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops 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) upon tps, iac and maf and cleaned the TB. After irritating 2-3 exchange 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 upon them, and found that its a common problem similar to 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 need to be re-adjusted? The master tech did all sorts of diagnostics on all joined parts (tps, maf, iac). 0-200 all times I acknowledge it attain the dealer for diagnostics.. upon going problems are in reality surcharge 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 rudely after I got it home.Any additional back you can allow is appreciated. I don't know what else to reach but take it assist to the dealer. I know I've got the shop foreman energetic on it at the dealer, but I still atmosphere its pushed to the urge on as its outdated and everyone loses in this situation.
I don't have any check engine lights unless I unplug the MAF sensor. when the MAF is plugged in next the car will stall unless I put my foot upon the accelerator. There is furthermore an intermittent popping solid coming at idle.