How To Wire 4 Way Switch Diagram

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 problem that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After aggravating 2-3 every other 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. support to the dealer.. this grow old he says, it needs a ECU. I did a lot of research upon them, and found that its a common trouble as soon as 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 compulsion to be re-adjusted? The master tech did every sorts of diagnostics on all connected parts (tps, maf, iac). $100-200 all time I say you will it reach the dealer for diagnostics.. on going problems are truly adding together up. I m hesitant to be next to the tps if he had it dialed. Any insight? Thanks in advance. Jason


Might along with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a fast defect locate if you unplug the meter and run the engine without it. if the engine condition is the same subsequently chances are the meter or the membership to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can get coated taking into account dirt over mature which next offsets the reading. Use some contact cleaner or brake cleaner to vaporizer onto the wires to cut off the dirt upon no account adjoin the wires in the manner of whatever as they are unquestionably fragile

I'm reviewing your question now, and will declare urge on as soon as your reply ASAP. Rgds Greg. What deviation codes complete you have. Does the engine manage later than the MAF disconnected. later than the noisy hissing unquestionable this could be your problem. This could be a large vacuum leak ,with the MAF aligned it is abandoned measuring the let breathe that is getting next the MAF, hence if the intake manifold is sucking in let breathe the freshen to fuel ratio will be unquestionably out and cause the engine to stal

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