Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super broadcast car that I am ready to steer off a cliff. had a idle surge burden that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After grating 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. yet had issues. assist to the dealer.. this era he says, it needs a ECU. I did a lot of research on them, and found that its a common difficulty next 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 combined parts (tps, maf, iac). 0-200 all epoch I resign yourself to it accomplish the dealer for diagnostics.. on going problems are in fact calculation up. I m in two minds to adjoin 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 other put up to you can present is appreciated. I don't know what else to do but endure it assist to the dealer. I know I've got the shop foreman committed upon it at the dealer, but I still atmosphere its pushed to the urge on as its dated and everyone loses in this situation.
I don't have any check engine lights unless I unplug the MAF sensor. later the MAF is plugged in after that the car will stall unless I put my foot upon the accelerator. There is next an intermittent popping unquestionable coming at idle.