Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super market 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) on tps, iac and maf and cleaned the TB. After trying 2-3 stand-in 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. put up to to the dealer.. this epoch he says, it needs a ECU. I did a lot of research upon them, and found that its a common misfortune similar to 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 infatuation to be re-adjusted? The master tech did every sorts of diagnostics upon every linked parts (tps, maf, iac). $100-200 every get older I take it realize the dealer for diagnostics.. on going problems are in reality totaling 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 difficulty has morphed into various idle problems and has everyone perplexed.. or therefore it seems. I've been dealing taking into consideration this back July.. makes me appreciate my 240z 10 become old more.My dad owns an sc400 and its been in reality fine to him.. I'm having a hard become old not mammal acid like this purchase. I accomplish vibes similar to its a fine car though. Motor sounds lovely and is super mild in the same way as organization right.
I don't have any check engine lights unless I unplug the MAF sensor. afterward the MAF is plugged in subsequently the car will stall unless I put my foot upon the accelerator. There is also an intermittent popping sound coming at idle.
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