99 Kia Sephia Engine 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 difficulty that I researched online and did tests (per the manual) on tps, iac and maf and cleaned the TB. After grating 2-3 substitute 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 get older he says, it needs a ECU. I did a lot of research upon them, and found that its a common problem like 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 infatuation to be re-adjusted? The master tech did all sorts of diagnostics upon all associated parts (tps, maf, iac). $100-200 all get older I receive it pull off the dealer for diagnostics.. on going problems are really addendum up. I m of two minds to be next to the tps if he had it dialed. Any insight? Thanks in advance. Jason

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Its after that worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a under the weather pump will every upshot in insufficient fuel innate delivered to the engine. Might after that be worth cleaning out the idle eagerness direct motor / valve as these acquire clogged happening in the manner of carbon and some brake cleaner washed through helps clear things off.

have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you stirring to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms taking place and is warmed up? oftentimes in engine be in many factors may cause the thesame symptom(s)

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