American Ironhorse Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make known car that I am ready to steer off a cliff. had a idle surge burden that I researched online and did tests (per the manual) upon tps, iac and maf and cleaned the TB. After infuriating 2-3 swap 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. urge on to the dealer.. this period he says, it needs a ECU. I did a lot of research on them, and found that its a common suffering once 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 all sorts of diagnostics upon all aligned parts (tps, maf, iac). $100-200 all times I acknowledge it accomplish the dealer for diagnostics.. upon going problems are really add-on up. I m in two minds to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a little more about the misery history. It currently has a master tech credited idle freshen rule valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would rule in the car without this symptom.

Hello the TPS does have an effect on switching the car into idle mode in view of that I'd suggest to create certain the throttle plate is 100% closed and not slightly ashore next carbon. and after that familiarize the TPS fittingly that the IDL glue is continuous to the E2 fasten subsequently the throttle is closed, and retrieve circuit once the throttle is just cracked. Don't trouble about any voltages, the IDL entre is the truly important one.

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