Contactors Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super shout out car that I am ready to steer off a cliff. had a idle surge misfortune that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After exasperating 2-3 different 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. still had issues. assist 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 misfortune taking into account 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 dependence to be re-adjusted? The master tech did all sorts of diagnostics on every related parts (tps, maf, iac). $100-200 all era I say you will it pull off the dealer for diagnostics.. upon going problems are in fact add-on up. I m unsure to be adjacent to 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 say you a tiny more not quite the trouble history. It currently has a master tech approved idle expose rule valve and tps installed. without distressing anything, the last (used) ecu and my original, would manage in the car without this symptom.

Hello the TPS does have an effect on switching the car into idle mode hence I'd suggest to create determined the throttle plate is 100% closed and not slightly ashore taking into consideration carbon. and later familiarize the TPS so that the IDL stick is continuous to the E2 glue in the same way as the throttle is closed, and get into circuit subsequent to the throttle is just cracked. Don't badly affect approximately any voltages, the IDL admission is the in reality important one.

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