Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super market car that I am ready to steer off a cliff. had a idle surge suffering that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After a pain 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. nevertheless had issues. encourage to the dealer.. this epoch 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 compulsion to be re-adjusted? The master tech did all sorts of diagnostics upon all combined parts (tps, maf, iac). 0-200 every become old I put up with it do the dealer for diagnostics.. on going problems are really count up. I m of two minds to touch 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 extra assist you can allow is appreciated. I don't know what else to reach but believe it encourage to the dealer. I know I've got the shop foreman working upon it at the dealer, but I still character its pushed to the encourage as its out of date and everyone loses in this situation.
Hello the TPS does have an effect on switching the car into idle mode as a result I'd suggest to make certain the throttle dish is 100% closed and not slightly ashore considering carbon. and after that accustom yourself the TPS appropriately that the IDL glue is continuous to the E2 stick subsequent to the throttle is closed, and admission circuit like the throttle is just cracked. Don't trouble nearly any voltages, the IDL right to use is the in fact important one.