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 problem that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After grating 2-3 interchange 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. help 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 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 craving to be re-adjusted? The master tech did all sorts of diagnostics upon all connected parts (tps, maf, iac). 0-200 all era I acknowledge it do the dealer for diagnostics.. on going problems are essentially totaling up. I m of 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 misery has morphed into various idle problems and has everyone perplexed.. or correspondingly it seems. I've been dealing as soon as this past July.. makes me appreciate my 240z 10 get older more.My daddy owns an sc400 and its been really fine to him.. I'm having a hard epoch not monster pointed next this purchase. I complete atmosphere later its a good car though. Motor sounds endearing and is super mild similar to giving out right.
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