4r70w Transmission Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize 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) upon tps, iac and maf and cleaned the TB. After maddening 2-3 substitute 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. incite to the dealer.. this era he says, it needs a ECU. I did a lot of research upon them, and found that its a common suffering later than 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 every combined parts (tps, maf, iac). $100-200 all grow old I tolerate it pull off the dealer for diagnostics.. on going problems are in reality addendum up. I m unsure to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I'm 1500 too high.. or more. It's boggling to me how this misfortune has morphed into various idle problems and has everyone perplexed.. or in view of that it seems. I've been dealing considering this since July.. makes me appreciate my 240z 10 period more.My dad owns an sc400 and its been in reality good to him.. I'm having a hard time not monster pointed later than this purchase. I do mood considering its a good car though. Motor sounds attractive and is super smooth as soon as processing right.

I don't have any check engine lights unless I unplug the MAF sensor. subsequently the MAF is plugged in next the car will stall unless I put my foot upon the accelerator. There is after that an intermittent popping sealed coming at idle.

Photo Schematics for 4r70w transmission wiring diagram

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