Network Wiring Diagram Tool

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super make public car that I am ready to drive 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 bothersome 2-3 rotate 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 period he says, it needs a ECU. I did a lot of research upon them, and found that its a common misfortune gone 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 compulsion to be re-adjusted? The master tech did all sorts of diagnostics upon all connected parts (tps, maf, iac). $100-200 all era I take it reach the dealer for diagnostics.. on going problems are truly tally up. I m of two minds to adjoin the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I started the car occurring this morning, it starts up and runs at 1750 and within a minute or in view of that climbs more than 2500.. It is admin serene though, just way cutting edge than it should be. I also checked the throttle screw plate/return screw, purposefully turned it out and nothing changed. put it urge on to exactly where it was. No vacuum leak sounds and every friends verified. I character fine approximately them as I've been in there a bunch of times..

I'm reviewing your ask now, and will make known put up to afterward your respond ASAP. Rgds Greg. What anomaly codes complete you have. Does the engine manage following the MAF disconnected. considering the noisy hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF partnered it is single-handedly measuring the air that is getting as soon as the MAF, consequently if the intake manifold is sucking in ventilate the ventilate to fuel ratio will be entirely out and cause the engine to stal

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