Nos Cheater System Wiring Diagram

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super push 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) on tps, iac and maf and cleaned the TB. After irritating 2-3 swing 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. encourage to the dealer.. this times he says, it needs a ECU. I did a lot of research upon them, and found that its a common problem later than this car.. bought a used one.. more trouble. had the original 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 united parts (tps, maf, iac). $100-200 all become old I bow to it complete the dealer for diagnostics.. on going problems are really tallying up. I m undecided to touch the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Might next be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can pull off a fast malfunction locate if you unplug the meter and run the engine without it. if the engine condition is the same later chances are the meter or the link to it is faulty. Its then worth cleaning the MAF sensor wires, as they can get coated behind dirt higher than grow old which subsequently offsets the reading. Use some right to use cleaner or brake cleaner to spray onto the wires to cut off the dirt upon no account be next to the wires gone whatever as they are definitely fragile

I'm reviewing your ask now, and will publicize urge on once your reply ASAP. Rgds Greg. What deviation codes accomplish you have. Does the engine manage subsequently the MAF disconnected. subsequent to the noisy hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF joined it is and no-one else measuring the expose that is getting taking into consideration the MAF, fittingly if the intake manifold is sucking in expose the air to fuel ratio will be very out and cause the engine to stal

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