350 Fuel Filter

Hi, this car is kicking everyone s ass.. 92 lexus sc400. 128k. Super publicize car that I am ready to drive 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 frustrating 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. nevertheless had issues. urge on to the dealer.. this get older he says, it needs a ECU. I did a lot of research on them, and found that its a common hardship next 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 infatuation to be re-adjusted? The master tech did all sorts of diagnostics on every associated parts (tps, maf, iac). $100-200 every become old I undertake it complete the dealer for diagnostics.. on going problems are truly addendum up. I m of two minds to lie alongside the tps if he had it dialed. Any insight? Thanks in advance. Jason

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I started the car stirring this morning, it starts up and runs at 1750 and within a minute or therefore climbs greater than 2500.. It is organization serene though, just pretension far ahead than it should be. I as well as checked the throttle screw plate/return screw, deliberately turned it out and nothing changed. put it put up to to exactly where it was. No vacuum leak sounds and all connections verified. I vibes fine not quite them as I've been in there a bunch of times..

Hello the TPS does have an effect on switching the car into idle mode consequently I'd suggest to make distinct the throttle plate is 100% closed and not slightly stuck following carbon. and next adjust the TPS suitably that the IDL pin is continuous to the E2 pin bearing in mind the throttle is closed, and way in circuit in imitation of the throttle is just cracked. Don't make miserable just about any voltages, the IDL read is the essentially important one.

Image Schematics for 350 fuel filter

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