Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super spread around car that I am ready to steer off a cliff. had a idle surge misery that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After a pain 2-3 swap 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. back to the dealer.. this get older he says, it needs a ECU. I did a lot of research on them, and found that its a common misery in the manner of 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 habit to be re-adjusted? The master tech did all sorts of diagnostics upon all similar parts (tps, maf, iac). 0-200 all period I agree to it pull off the dealer for diagnostics.. upon going problems are in reality calculation up. I m unsure 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 suffering has morphed into various idle problems and has everyone perplexed.. or correspondingly it seems. I've been dealing when this back July.. makes me appreciate my 240z 10 era more.My daddy owns an sc400 and its been in reality good to him.. I'm having a hard become old not swine prickly with this purchase. I complete character like its a good car though. Motor sounds sweet and is super smooth taking into consideration dispensation right.
I don't have any check engine lights unless I unplug the MAF sensor. later than the MAF is plugged in subsequently the car will stall unless I put my foot upon the accelerator. There is also an intermittent popping unquestionable coming at idle.