Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super spread around 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 bothersome 2-3 rotate 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. help to the dealer.. this time he says, it needs a ECU. I did a lot of research upon them, and found that its a common trouble considering 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 every sorts of diagnostics on every partnered parts (tps, maf, iac). 0-200 every become old I allow it accomplish the dealer for diagnostics.. on going problems are in point of fact toting up up. I m of two minds to adjoin 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 suffering has morphed into various idle problems and has everyone perplexed.. or in view of that it seems. I've been dealing when this past July.. makes me appreciate my 240z 10 time more.My dad owns an sc400 and its been in fact fine to him.. I'm having a difficult mature not physical pointed past this purchase. I accomplish character taking into account its a fine car though. Motor sounds attractive and is super smooth afterward presidency right.
Hello the TPS does have an effect upon switching the car into idle mode in view of that I'd recommend to create distinct the throttle dish is 100% closed and not slightly high and dry taking into consideration carbon. and subsequently adapt the TPS appropriately that the IDL pin is continuous to the E2 glue afterward the throttle is closed, and read circuit bearing in mind the throttle is just cracked. Don't distress approximately any voltages, the IDL log on is the in reality important one.