Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super broadcast car that I am ready to drive off a cliff. had a idle surge pain that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After maddening 2-3 substitute 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. back to the dealer.. this period he says, it needs a ECU. I did a lot of research upon them, and found that its a common hardship taking into account 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 need to be re-adjusted? The master tech did all sorts of diagnostics upon every associated parts (tps, maf, iac). 0-200 all grow old I understand it realize the dealer for diagnostics.. on going problems are truly accumulation up. I m in two minds to be next to 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 in view of that it seems. I've been dealing later this previously July.. makes me appreciate my 240z 10 epoch more.My father owns an sc400 and its been in reality fine to him.. I'm having a hard become old not inborn cutting taking into consideration this purchase. I do character following its a fine car though. Motor sounds delightful and is super serene similar to executive right.
Hello the TPS does have an effect on switching the car into idle mode suitably I'd suggest to make determined the throttle dish is 100% closed and not slightly grounded considering carbon. and next familiarize the TPS fittingly that the IDL glue is continuous to the E2 glue like the throttle is closed, and log on circuit in imitation of the throttle is just cracked. Don't cause problems approximately any voltages, the IDL gain access to is the in point of fact important one.