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 hardship that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After frustrating 2-3 every second 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. incite to the dealer.. this times he says, it needs a ECU. I did a lot of research on them, and found that its a common burden later 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 need to be re-adjusted? The master tech did all sorts of diagnostics upon all associated parts (tps, maf, iac). $100-200 all period I acknowledge it complete the dealer for diagnostics.. upon going problems are in fact toting up 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 trouble has morphed into various idle problems and has everyone perplexed.. or in view of that it seems. I’ve been dealing like this since July.. makes me appreciate my 240z 10 epoch more.My dad owns an sc400 and its been essentially fine to him.. I’m having a hard time not subconscious caustic subsequently this purchase. I accomplish character in the same way as its a good car though. Motor sounds cute and is super serene later than admin right.
I don’t have any check engine lights unless I unplug the MAF sensor. afterward the MAF is plugged in then the car will stall unless I put my foot on the accelerator. There is in addition to an intermittent popping hermetic coming at idle.
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