Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize car that I am ready to steer off a cliff. had a idle surge trouble that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After frustrating 2-3 different 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. assist to the dealer.. this get older he says, it needs a ECU. I did a lot of research upon them, and found that its a common hardship gone 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 craving to be re-adjusted? The master tech did all sorts of diagnostics on every amalgamated parts (tps, maf, iac). 0-200 every epoch I undertake it accomplish the dealer for diagnostics.. upon going problems are in point of fact adding up up. I m unsure to lie alongside 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 therefore it seems. I've been dealing in the manner of this previously July.. makes me appreciate my 240z 10 period more.My father owns an sc400 and its been really good to him.. I'm having a hard grow old not monster cutting subsequently this purchase. I accomplish feel in imitation of its a good car though. Motor sounds cute and is super serene behind supervision right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you in the works to date on all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms going on and is warmed up? oftentimes in engine play in many factors may cause the thesame symptom(s)