Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout from the rooftops car that I am ready to steer 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 exasperating 2-3 vary 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. assist to the dealer.. this become old he says, it needs a ECU. I did a lot of research upon them, and found that its a common pain 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 habit to be re-adjusted? The master tech did every sorts of diagnostics on all united parts (tps, maf, iac). $100-200 all era I take it pull off the dealer for diagnostics.. upon going problems are in reality supplement up. I m in 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 trouble has morphed into various idle problems and has everyone perplexed.. or thus it seems. I’ve been dealing similar to this previously July.. makes me appreciate my 240z 10 mature more.My daddy owns an sc400 and its been in reality good to him.. I’m having a difficult grow old not bodily caustic taking into consideration this purchase. I complete tone following its a fine car though. Motor sounds endearing and is super mild past giving out right.
I don’t have any check engine lights unless I unplug the MAF sensor. subsequently the MAF is plugged in after that the car will stall unless I put my foot on the accelerator. There is plus an intermittent popping hermetic coming at idle.
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