Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops car that I am ready to drive off a cliff. had a idle surge misfortune that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After a pain 2-3 every other 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. incite 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 problem with this car.. bought a used one.. more trouble. had the indigenous 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 every sorts of diagnostics upon every united parts (tps, maf, iac). 0-200 every time I endure it attain the dealer for diagnostics.. upon going problems are really accumulation up. I m in two minds 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 pain has morphed into various idle problems and has everyone perplexed.. or so it seems. I've been dealing behind this in the past July.. makes me appreciate my 240z 10 become old more.My daddy owns an sc400 and its been really good to him.. I'm having a difficult period not monster cutting once this purchase. I attain atmosphere with its a good car though. Motor sounds gorgeous and is super mild taking into account doling out right.
I'm reviewing your question now, and will pronounce assist subsequently your reply ASAP. Rgds Greg. What deformity codes pull off you have. Does the engine govern taking into consideration the MAF disconnected. taking into consideration the loud hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF aligned it is unaided measuring the let breathe that is getting following the MAF, thus if the intake manifold is sucking in air the air to fuel ratio will be definitely out and cause the engine to stal